Mixing of genetic information during a sexual life cycle of a species will introduce
genetic variations. Which of the following correctly shows process that increase
genetic diversity? (B.6G)
I. Random fertilization
II. Mitosis
III. Independent assortment of chromosomes
IV. Crossing over of alleles
I, III, and IV
III and IV only
l only
l, ll, and lll
Answers
Genetic diversity is a biological term that explains the variations that exists in the genetic makeup of organisms in a population. It also ensures survival and prevents inbreeding effects.
The process that lead to an increase in genetic diversity include:
I. Random fertilization
III. Independent assortment of chromosomes
IV. Crossing over of alleles (I, III, and IV)
These processes of random fertilization, independent assortment and crossing over ensures continued variation among populations. All these processes allows for the blending and mixing of the alleles to give a combination that is different (not identical) to that of the parents.Learn more about genetic diversity: https://brainly.com/question/22143200
Related Questions
what does this combination of offspring tell her about the genetic makeup of the red geranium parent? responses the red geranium is homozygous for red flowers (rr). the red geranium is homozygous for red flowers , (uppercase r r ), . the red geranium is homozygous for white flowers (rr). the red geranium is homozygous for white flowers , (lowercase r r ), . the trait shows incomplete dominance. the trait shows incomplete dominance. the red geranium is heterozygous for red flowers (rr). the red geranium is heterozygous for red flowers , (uppercase r lowercase r ), . skip to navigation previous 2, fully attempted. 3, fully attempted. 4, fully attempted. 5, fully attempted. 6, fully attempted. 7, unattempted. 8, unattempted. 9, unattempted. 10, unattempted. 11, unattempted.next
Answers
The red geranium is heterozygous for red flowers (Rr).
We know that the red flower, to be red needs to have at least a dominant allele, so it could be either Rr or RR.Let's try both the ways.If the white geranium (rr) is being crossed with RR, all the offspring would be red with genotype: Rr.On the other hand, if the flower is Rr and it's being crossed with rr, that would result in half of the new generation plants having red flowers and the other half white flowers.A horticulturist seeks to cultivate geraniums with particular qualities. She is aware that the allele R (RR and Rr) controls the characteristics of red flowers, while the allele r controls the characteristics of white blossoms (rr).To know more about geranium check the below link:
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what do Prokaryotes and Eukaryotes have the same of?
Answers
Both have a nucleus.
15) naturally occurring variations within a species are mainly the result of
a) dynamic equilibrium and sexual reproduction b) sexual reproduction and competition
c) sexual reproduction and mutations
d) mutations and competition
Answers
Answer:
d mutations and competition
Which is the best description
of transverse waves?
A. A transverse wave squeezes together,
B. A transverse wave moves up and down,
C. A transverse wave travels in a circle.
Answers
Answer:
B. A transverse wave moves up and down
Explanation:
A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves.
Read the following and then answer the questions: Jimena was quietly enjoying her lunch when an unexpected knock on the door startled her. She found two people in suits standing on her front porch. They explained they were medical scientists from Columbia University in New York, and they were visiting her to talk about some old blood samples from a transfusion she had back in the 1970s. They showed Jimena a consent form that she had signed. It had allowed scientists to store and study her blood to help advance their medical knowledge. Now she was worried. Did she have some terrible disease? She invited them in and sat down in case the news was bad. The researchers explained that they were part of a team that searches for viruses in old blood transfusion samples. Their work was aimed at finding new transfusion-transmissible viruses that ought to be screened for in the donated blood supply to further protect patients. They were looking at samples from the 1970s because, unlike today, the only virus screened for back then was Hepatitis B. These lightly screened samples might lead to discovery of previously unrecognized viruses. Sadly, lack of broader screening for bloodborne viruses meant that thousands of people were infected with Hepatitis C and human immunodeficiency virus (HIV) by way of contaminated blood transfusions during the 1970s and 1980s. People with hemophilia, a blood-clotting disorder, had an unusually high prevalence of Hepatitis C virus and HIV. This is because managing hemophilia in the 1970s and 1980s often involved administering clotting factors derived from human blood. Before the stricter screening went into effect, at least 6,000 hemophiliacs in the United States are believed to have contracted Hepatitis C from blood transfusions. Of course, hemophiliacs were not the only ones who suffered: Anyone who got a transfusion for any reason at that time was at high risk for exposure to these viruses. In 1976, during her last trimester of pregnancy, Jimena had developed severe anemia. She remembered receiving a blood transfusion a few weeks before she delivered her son, Jose. The transfusion was done to ensure that her blood levels could support both her and her child during delivery. She knew this must have been the reason the doctors were visiting her now. She asked them if they were here to tell her she had HIV or hepatitis––she had been feeling very tired lately, and wondered if this was the cause. The doctors hastened to explain that the blood she received was not infected with Hepatitis C or HIV. But they had found something else: a new virus never seen before in humans. They examined the medical records of all the people who had received blood with this virus, and it did not seem to cause disease. However, they wanted to investigate more. They were here to get a more detailed medical history from Jimena, along with a new blood sample. They also wanted to reach out to Jose, Jimena’s son, and see if he’d be willing to take part in the study, too. Jimena’s eyes became moist as she explained that Jose had died of cancer eight years ago. The doctors expressed their sympathy, but pressed Jimena for the type of cancer he had developed. She said it was liver cancer. "Are you sure we didn’t catch hepatitis C from the transfusion?" she asked the researchers. "I know that can cause liver cancer, right?" "Yes, it can," they replied.
1. How could old samples of donate blood be screened to search for new viruses?
3. How could researchers isolate and grow a particular virus from the Jimenas blood?
Answers
The researchers could isolate and grow a particular virus from Jimena's blood through the following procedure: The process of isolating and growing a particular virus from Jimena's blood is called virus cultivation.
Researchers begin by collecting a blood sample and treating it with a substance that ruptures the host cells while leaving the viral particles intact. After that, they transfer the suspension to a suitable host cell and incubate it. The host cell is used to propagate the virus. If the virus reproduces, it is allowed to infect the host cells. Then the infected cells are checked regularly to see how the virus is doing in the host cell. This enables the researchers to research the virus and take measures to protect people from being infected by it.
Researchers can isolate and grow a particular virus from Jimena's blood by following several steps. First, they would collect a blood sample from Jimena. Next, they would separate the blood components, such as plasma and red and white blood cells, to identify the presence of the virus. Once they have located the virus, they would extract it from the blood sample.
To grow the virus, researchers would then introduce it into a suitable cell culture or host organism, which provides the necessary environment for the virus to reproduce. They would monitor the growth of the virus and collect new viral particles as they are produced. Throughout this process, researchers would ensure the cell culture or host organism is kept under controlled conditions, such as temperature and humidity, to optimize viral replication.
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Translation involves all of the following types of molecules
except:
a
DNA
b amino acids
С
tRNA
d mRNA
Answers
Answer:
A. DNA
Explanation:
Translation occurs in the ribosomes after leaving the nucleus, and does not involve DNA molecules.
Translation involves tRNA which binds to mRNA.
Then, amino acids are created based on what has been encoded.
So, A is the correct answer.
Answer:
DNA
Explanation:
The translation is the process of the sequence of nucleotides in mRNA into the order of amino acids in a polypeptide (protein).
Protein synthesis is performed in a process called translation in which the alphabet of four-letter nucleic acids (A; G; C; T) must be translated into the language of a protein with 20 different amino acids.
all of the following represent diagnostic features of chordates except for which one?
a. vertebrae
b. a notochord
c. a dorsal hollow nerve cord
d. pharyngeal slits
Answers
The embryonic of these groups is contained in the thinnest layer. It is not found in every chordate. All chordates have paired gill pouches, a notochord, and a dorsal nerve cord. Amnion is the correct response, thus.
"The notochord, single, ventral, tubular nerve cord, pharyngeal pouches, and postanal propulsion tail are the four distinguishing features that, when combined, differentiate chordates from all other phyla.The embryonic of these groups is contained in the thinnest layer. It is not found in every chordate. All chordates have paired gill pouches, a notochord, and a dorsal nerve cord. Amnion is the correct response, thus. The organisms in the chordates can be identified by four distinct characteristics: 1) the development of an offer a range past the anus; 2) a pliable rod spanning the width of the individual's body called the notochord, upon which the remainder of the spinal column depends for stability; 3) a hollow dorsal nerve cord (... All vertebrates qualify as chordates and have the same anatomical and morphological features, including an ectoderm, a hollow dorsal nerve cord, pharynx slits, and a comment tail.
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the likelihood of recombination is the same regardless of the distance between the two genes. Select one: True False
Answers
The likelihood of recombination is not the same regardless of the distance between two genes. Therefore this statement is false
Recombination refers to the process by which genetic material, typically DNA, is exchanged between two chromosomes during cell division. It plays a crucial role in generating genetic diversity and is an important mechanism for evolution.
Genes that are close together on the same chromosome are said to be tightly linked, and they tend to be inherited together as a unit (known as genetic linkage).
The likelihood of recombination between tightly linked genes is low because there is less opportunity for crossing over to happen between them.
Thus, the likelihood of recombination is not the same regardless of the distance between the two genes. The probability of recombination increases with the distance between genes on the same chromosome.
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what is the primary action of antidiuretic hormone?
Answers
Answer:
The primary action of the antidiuretic hormone is that it causes collecting ducts in the kidneys to reabsorb more water.
Explanation:
Human vasopressin is also known as the Anti-diuretic hormone (ADH) causes kidney-collecting ducts to reabsorb more water.
What is Anti-diuretic hormone (ADH)?Human vasopressin is also called antidiuretic hormone, arginine vasopressin or argipressin. It is defined as the hormone synthesized from the AVP gene as a peptide prohormone in neurons in the hypothalamus that converts to AVP.
ADH is the hormone that helps constrict blood vessels and helps the kidneys control the amount of water and salt in the body which helps control blood pressure and the amount of urine. This reduces the amount of urine released and the nature of urine becomes hypertonic which is concentrated. Because of this type of action, vasopressin is known as an antidiuretic hormone.
Thus, Human vasopressin is also known as the Anti-diuretic hormone (ADH) causes kidney-collecting ducts to reabsorb more water.
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In the posterior view, the cubital region is _______ to the carpal region.
Distal
Proximal
Medial
Superficial
Answers
The cubital district is the back piece of the elbow. The Carpal alludes to the wrist bones, so this construction is the most distal of the areas recorded.
The brachial district is better than the antebrachial locale. The brachial section comprises the upper arm and is characterized as the region between the shoulder and elbow joints. The antebrachial district lies between the hand and the elbow of the arm.
The proximal column of carpal bones (moving from outspread to ulnar) are the scaphoid, lunate, triquetrum, and pisiform. In contrast, the distal line of carpal bones (additionally from spiral to ulnar) involves the trapezium, trapezoid, capitate, and hamate.
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Which statement concerning organism A and organism B is correct? *
The diagram below represents two organisms.
*S
Organism A
single-celled
1 point
JA
Organism B
multicellular
Answers
activity of the sodium pump results in the net movement of a positive charge across the membrane. how does this lead to a change in the electrical potential of the membrane?
Answers
The activity of the sodium pump, also known as the sodium-potassium pump, plays a crucial role in establishing and maintaining the electrical potential of a membrane.
The pump uses energy in the form of ATP to actively transport sodium ions (Na+) out of the cell and potassium ions (K+) into the cell, against their concentration gradients.
By pumping out three sodium ions for every two potassium ions pumped in, the sodium pump creates an electrochemical gradient across the membrane. This gradient leads to a net movement of positive charges, as more positive charges are being transported out of the cell than into the cell.
The movement of positive charges creates an imbalance in charge across the membrane, resulting in an electrical potential difference known as the membrane potential. The interior of the cell becomes relatively more negative compared to the exterior, establishing a negative membrane potential.
This change in the electrical potential of the membrane has important implications for various cellular processes, such as the transmission of nerve impulses, muscle contraction, and the transport of other ions and molecules across the cell membrane. It provides the necessary electrical charge separation for the functioning of excitable cells and is essential for many physiological processes in organisms.
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The bicoid gene product is directly responsible for _____ in a developing drosophila embryo.
Answers
The bicoid gene product is directly responsible for the establishment of the anterior-posterior axis in a developing drosophila embryo.
The gradient created by the bicoid plays a crucial part in positioning the transcription of pair-rule and gap genes along the anterior-posterior axis of Drosophila. Nanos protein controls the posttranscriptional regulation of bicoid mRNA translation.
The organizer of the anterior body pattern in Drosophila is the gene bicoid. Embryos missing maternally expressed bicoid are unable to develop the head and thorax as well as other anterior segments.
In the front portion of the embryo, the Bicoid protein increases hunchback gene transcription, whereas, in the posterior portion of the embryo, the Nanos protein suppresses hunchback RNA translation.
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which type of ganglion cells respond to color and details cones dorsal cells magnocellular cells parvocellular cells
Answers
Retinal ganglion cells respond to color and details cones dorsal cells magnocellular cells parvocellular cells.
Retinal ganglion cells are responsible for the transmission of information that is necessary for recognizing the form and motion of things. There are two primary varieties of retinal ganglion cells in the monkey eye. These cells, known as Type M and Type P cells, are responsible for processing information regarding various stimulus qualities. The magnocellular (M) route has a predilection for stimulation that is low in spatial frequency but high in temporal frequency, and it is extremely sensitive to luminance contrast but not the color.
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this answer i need pls ill mark brainliest
Answers
All - growth, exchange of gases, excretion, reproduction, and death (option d).
All living organisms undergo various life processes to maintain their existence. Let's analyze each option to determine which life processes are carried out by an organism's cells:
A. Only growth and exchange of gases: While cells are involved in growth and exchange of gases, they also participate in other life processes. This option is incomplete.
B. Only growth, exchange of gases, and reproduction: Cells play a crucial role in reproduction as they are responsible for the production of gametes and the process of cell division. However, there are additional life processes that cells also undertake.
C. Only growth, exchange of gases, excretion, and reproduction: This option includes excretion in addition to growth, exchange of gases, and reproduction. Cells participate in excretion by eliminating waste materials. However, there is one more life process that cells experience.
D. All - growth, exchange of gases, excretion, reproduction, and death: This option encompasses all the mentioned life processes. Cells are involved in growth as they undergo cell division and increase in number. They exchange gases through processes like respiration. Cells excrete waste products. They participate in reproduction through the formation of gametes and cell division. Lastly, cells also experience death as they have a limited lifespan.
Therefore, the correct answer is D. All - growth, exchange of gases, excretion, reproduction, and death.
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an organism has cysteine as a growth factor. what can we infer from this?
Answers
If an organism requires cysteine as a growth factor, it implies that the organism cannot synthesize cysteine on its own and depends on an external source to obtain this amino acid for growth and development.
Cysteine is a non-essential amino acid for many organisms, meaning that they can produce it through various biosynthetic pathways. However, in some cases, organisms may lack the enzymes or metabolic pathways necessary to synthesize cysteine. When an organism is classified as a cysteine auxotroph, it means that it requires an exogenous supply of cysteine to meet its nutritional needs. Without access to cysteine, the organism may not be able to synthesize important proteins or metabolites that contain cysteine as a crucial component.
The need for cysteine as a growth factor may have implications in terms of the organism's environmental requirements and the availability of cysteine-rich sources in its natural habitat. It suggests that the organism must either acquire cysteine from the environment or rely on symbiotic relationships with other organisms that can provide it. Understanding an organism's growth factor requirements, such as cysteine, can have implications for its culture or cultivation, nutritional supplementation, and understanding its metabolic capabilities and limitations.
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Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
Answers
The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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when does your body don't require energy
Answers
Answer:Three transport processes that do not require energy are; diffusion, osmosis and facilitated diffusion
Explanation:
What country is at 85* South and 10* East?
Answers
Answer: close to the south pole so antartica
which of the following does not have a brain? a. ant b. starfish c. earthworm d. fruit fly
Answers
Starfish does not have a brain.
B is the correct answer.
Blood and brain are absent in starfish. They do, however, manage to get around it in very easy and creative ways. Seawater is pumped through the starfish's body in place of blood, providing vital nutrients that the starfish needs for its organs to function properly. They won't run out of water either because there is enough of it all around them.
Despite not having brains, starfish may nevertheless process information and respond to their surroundings. The following time you encounter a starfish, keep in mind that despite its appearance, this intriguing animal actually possesses a high level of intelligence.
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question 3 if a population is at hardy-weinberg for a locus with two alleles, is there any allele frequency at which the heterozygote frequency is lower than both (individually) of the two homozygous frequencies? for example, with alleles a and a, and assuming hw, is there a frequency of a (called p) wherein the expected aa genotype frequency is rarer than the expected aa frequency and the expected aa frequency is rarer than the expected aa frequency?
Answers
In a population at Hardy-Weinberg equilibrium for a locus with two alleles, there is no allele frequency at which the heterozygote frequency is lower than both of the two homozygous frequencies.
Under Hardy-Weinberg equilibrium conditions, the frequency of heterozygotes (individuals with one copy of each allele) is equal to the product of the frequencies of the two alleles. This means that the frequency of heterozygotes can never be lower than the frequencies of either of the two homozygotes (individuals with two copies of the same allele). In other words, if a population is at Hardy-Weinberg equilibrium for a locus with two alleles, there is no allele frequency at which the heterozygote frequency is lower than both of the two homozygous frequencies. For example, consider a locus with two alleles, A and a. Let p be the frequency of the A allele and q be the frequency of the a allele. The Hardy-Weinberg equilibrium equation for the frequency of heterozygotes (individuals with one copy of each allele) is: Heterozygote frequency = pq The Hardy-Weinberg equilibrium equation for the frequency of homozygotes (individuals with two copies of the same allele) is: AA frequency = pp aa frequency = q^2. Since p and q are between 0 and 1, it is not possible for either p or q to be less than 0, and therefore it is not possible for either p^2 or q^2 to be less than 0. Therefore, it is not possible for the frequency of either of the two homozygotes to be less than 0. Since the frequency of heterozygotes is equal to pq, which is the product of p and q, and since both p and q are greater than or equal to 0, it is not possible for the frequency of heterozygotes to be less than either of the two homozygotes. Therefore, in a population at Hardy-Weinberg equilibrium for a locus with two alleles, there is no allele frequency at which the heterozygote frequency is lower than both of the two homozygous frequencies.
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Zoe is studying a mountainous region where a glacier is melting and retreating.
She constructs the timeline shown below to show her prediction of how the
region will change over time.
An arrow labeled time points from left to right, and has labels from 15 years to
115+ years. From left to right, the illustration shovs bare rocks, grasses an
shrubs, small trees, and then a dense, tall forest.
Why are the changes shown in the diagram classified as primary succession, and
not secondary succession? mm
(1 Point)
1
1
-Time
15 vears
35 vears
80 vears
A. The process results in the appearance of a climax community.
B. Many intermediate communities appear before the climax community.
C. The climax community appears after hundreds of years.
D. The process begins with pioneer species growing on bare rock.
Answers
The process begins with pioneer species that grow on bare rocky habitat.
Role of pioneer speciesThe changes shown in the diagram is classified as primary succession not secondary succession because the process begins with pioneer species that grow on bare rock. During the primary succession, the plants and animals first colonize on a barren and lifeless habitat, so these organisms is known as pioneer species.
Primary successionWe can see that there is no animal and plants present on the rocky habitat and after sometime the plant and animals colonize on the bare rock which shows us primary succession not secondary succession so we can conclude that the process begins with pioneer species that grow on bare rocky habitat.
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What is the difference between physical and topographic maps?
Answers
Please help hurry I’ll mark brainly
Answers
Answer:
LOOK AT PICTURE! MARK AS BRAINLIEST!
how do ocean currents affect climate?
Answers
Describe how the shape of the moon has changed over the course of three weeks.
the moon appears as a round ball in the night sky
the moon appears as a sliver in the night sky
The moon has changed its shape from a crescent to a circle.
The moon has changed its shape from a crescent to a half circle.
The moon has changed its shape from a full circle to a crescent.
The moon has changed its shape from a full circle to a three-quarter circle. science
Answers
About three weeks after the new moon, the moon will change its shape from a full circle to a crescent.
Why does the moon change shape over the course of a month?The Moon appears to change shape over the course of a month due to its position in relation to the Sun and the Earth. The Moon does not emit its own light; rather, it reflects sunlight.
As the Moon orbits around the Earth, different amounts of sunlight are reflected back to Earth, creating the various phases of the Moon.
When the Moon is positioned between the Earth and the Sun, the side facing the Earth is not illuminated, and this is known as the new moon phase.
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Match the protein or DNA with the relevant process. Transcriptional activator Choose... Lac ! (I minus) Choose... Operon Gene whose product constitutively inhibits lac operon transcription Fails to inhibit lac operon transcription Lac! Transcriptional repressor Facilitates energy conservation when no lactose is present DNA sequence that interacts with repressor Facilitates co-transcription of multiple genes Interacts with the RNA polymerase holoenzyme Operator
Answers
Here are the protein or DNA with the relevant process given below:Transcriptional activator - Facilitates co-transcription of multiple genes.
Lac ! (I minus) - Fails to inhibit lac operon transcription.Operon - A unit of genetic function consisting of a promoter, operator, and a coordinated cluster of genes whose expression is regulated as a single unit.Gene whose product constitutively inhibits lac operon transcription - LacI.Transcriptional repressor - Interacts with the DNA sequence that interacts with the repressor.Facilitates energy conservation when no lactose is present - The lactose operon. DNA sequence that interacts with repressor - Operator.Interacts with the RNA polymerase holoenzyme - Promoter.
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18 While studying the life cycle seen in the illustration, LaShawn made the
following notes:
• follows complete metamorphosis
• young barking frogs look similar to adults
• all frogs start their lives as eggs
How does the third statement differ from the other two?
F. It is an inference rather than an observation.
G. It is a prediction based on the diagram.
H. It is an untestable hypothesis instead of a testable one.
It is an actual observation made from the diagram.
Answers
Answer: Last option: It is an actual observation made from the diagram.
Explanation:
Which describes the purpose of the circulatory system? *
A.to remove digestive waste
B. To supply oxygen and nutrients to the body via blood vessels
C.to control all of the movement within the body
D. to remove liquid waste as urine
Answers
Answer:
B. To supply oxygen and nutrients to the body via blood vessels
Explanation:
Type the correct answer in the box. Spell all words correctly.
Rachel is a forensic investigator. She checks for lividity in the body of a dead victim. What does she know about the cause of lividity?
Rachel knows that
causes the blood to pool to the parts of the body closest to the ground after death.
Answers
Answer:
The answer is Gravity my guy
Explanation:
Finished my Forensics semester with a 98% and I'm currently studying to be a Forensic Anthropologist.
Gravity is the cause of lividity, which causes the blood to collect in the bodily parts closest to the ground when a person dies.
What is lividity?The process through which the body's blood ceases flowing after death as the heart stops pumping is known as livor mortis.
Gravity causes the blood to start settling to the lowest portions of the body, where it congeals and stays even if the body is moved.
Rachel is aware that when someone dies, the blood tends to collect in the body parts that are closest to the ground.
The bodily parts that are closest to the ground or a surface when someone dies are considered to be the lowest portions. The dead person now becomes pale, and the lividity region turns purple or reddish-purple.
Therefore, gravity causes the blood to start settling into the lowest portions of the body.
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