What is a genotype and what is a phenotype? Also what are dominant and recessive alleles and how are they written out?
Answers
Answer:
An organism's genotype is its specific combination of alleles for a given gene. ... The phenotype is the physical manifestation of an organism's allellic combination (genotype). For the pea plants, if the red allele is dominant and the white allele is recessive, only two phenotypes are possible.
Explanation:
Related Questions
This athlete's karyotype reveals a genetic anomaly caused by ______ event that occurred in the gamete cells of the athlete's mother or father.
o duplication o translocation
o nondisjunction o deletion
Answers
This athlete's karyotype reveals a genetic anomaly caused by nondisjunction event that occurred in the gamete cells of the athlete's mother or father.
Nondisjunction is a genetic anomaly that occurs during cell division, where the chromosomes fail to separate properly, leading to an abnormal distribution of chromosomes in the resulting gametes. As a result, the athlete's karyotype will show an abnormal number of chromosomes, either too many or too few.
Nondisjunction is a random event that can occur in either the mother or the father's gamete cells, and it is not related to any environmental factors or lifestyle choices. Deletion, on the other hand, is another type of genetic anomaly that occurs when a part of a chromosome is lost during cell division. This can result in the loss of critical genetic material, leading to various physical and developmental abnormalities. However, in this athlete's case, the karyotype revealed a nondisjunction event, which is the cause of the genetic anomaly.
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The embryos of all animals undergo gastrulation, a dramatic reorganization of cells critical to formation of the animal body. Do you understand all the terms associated with gastrulation? drag the terms on the left to the appropriate blanks on the right to complete the sentences.
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a) Gastrulation is a dramatic reorganization of the hollow blastula into a two-layered or three-layered embryo called a gastrula. b) Invagination of cells into the blastocoel forms a tube called the archenteron. c) The open end of the archenteron is called the blastospore.
Gastrulation is delineated as an early enlightening process at which point a fetus converts from of highest quality-spatial tier of epithelial containers (unborn young) and reorganizes into a multilayered and multidimensional building named the gastrula.
The basic gut that forms while gastrulation in a developing fetus is popular as the archenteron, the gastrocoel, or the ancient digestive hose. It expands into the endoderm and mesoderm of an animal. The archenteron is the digestive crater of a fetus, and this digestive crater will finally form the gastrointestinal lot when the fetus completely cultivates. The gastrointestinal (GI) area functions to digest (namely. decay fare) and consume foods into the carcass.
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The complete question is:
The embryos of all animals undergo gastrulation, a dramatic reorganization of cells critical to formation of the animal body.
Do you understand all the terms associated with gastrulation? Drag the terms to appropriate blanks to complete the sentences below:
gastrula, blastopore, archenteron.
a) Gastrulation is a dramatic reorganization of the hollow blastula into a two-layered or three-layered embryo called a __________.
b) Invagination of cells into the blastocoel forms a tube called the ___________.
c) The open end of the archenteron is called the ____________.
What is the possible significance of the finding that genes related to bacteria and archaea occur in the eukaryotic genome?
Answers
The discovery of genes related to bacteria and archaea occurring in the eukaryotic genome can have several significant implications:
1. Endosymbiotic Theory: The presence of bacterial and archaeal genes in eukaryotes supports the theory of endosymbiosis, which suggests that eukaryotic cells evolved from the symbiotic relationship between primitive eukaryotes and engulfed prokaryotic cells. Mitochondria, for example, are believed to have originated from ancient aerobic bacteria that were engulfed by a eukaryotic cell.
2. Horizontal Gene Transfer: Horizontal gene transfer refers to the transfer of genetic material between organisms that are not parent and offspring. The presence of bacterial and archaeal genes in eukaryotes suggests that horizontal gene transfer has occurred between these distinct domains of life.
3. Evolutionary Adaptation: The acquisition of genes from bacteria and archaea may have provided eukaryotes with new functional capabilities, allowing them to adapt and evolve in response to changing environments. Bacterial and archaeal genes in the eukaryotic genome may contribute to various cellular processes, such as metabolism, immune response, and stress tolerance.
4. Microbiome Interactions: The presence of bacterial and archaeal genes in the eukaryotic genome suggests a potential interaction between the host organism and its associated microbiome. These genes may play a role in mediating the symbiotic relationship between eukaryotes and their resident microbes.
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Explain why a person with an allele for a particular trait may not have a phenotype that shows
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A person with an allele for a particular trait may not exhibit the corresponding phenotype due to the presence of other alleles or factors that influence the expression of that trait. The expression of a gene is influenced by various factors, including interactions with other genes, environmental conditions, and epigenetic modifications.
In some cases, the allele may be recessive, requiring two copies (one from each parent) to be present in order for the phenotype to manifest. If the person carries only one copy of the allele, it may be masked by the presence of a dominant allele, resulting in the absence of the phenotype.
Additionally, genetic traits often interact with multiple genes and environmental factors, leading to complex patterns of inheritance. This can result in a range of phenotypic variations, even among individuals with the same genotype. Other genetic or environmental factors may modify the expression of the allele, causing it to have a different effect or be completely suppressed.
In summary, the presence of an allele for a particular trait does not guarantee its phenotypic expression. The complex interplay between genes, environmental factors, and other genetic interactions can influence the manifestation of a trait, leading to a diverse range of phenotypes within a population.
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Two heterozygous purple-stemmed plants are grown. Each parent has the genotype ANL/anl. Pollen from one of the plants is used to pollinate the other, and the resulting seeds are harvested. What traits would you expect in the plants grown from these seeds? A. All of the offspring plants will have purple stems. B. All of the offspring plants will have green stems. C. About half of the offspring plants will have purple stems, and half will have green stems. D. Most of the offspring plants will have purple stems, but some will have green stems.
Answers
Answer:
D. Most of the offspring plants will have purple stems, but some will have green stems.
Explanation:
These plants are heterozygous, which means that they have two different alleles of the same gene. One allele, the ANL one, is going to dominate over the other resulting in purple-stemmed plants, which is the color that ANL encodes for.
If we draw a Punnet Square, we can see that the majority of the offsprings will have purple stems, but some of them, the ones that have two recessive alleles, will have green stems.
ANL ANL: purple stemsANl anl: purple stemsanl ANL: purple stemsanl anl: green stems║ ANL ║ anl
ANL║ANL ANL ║ ANL anl
anl ║anl ANL ║anl anl
Which statement is incorrect about the Geologic Time Scale? A Life was not present when the Earth was still cooling. B Prokaryotes showed up on Earth long before any long reptiles and Small plants. C Modern humans arrived later than reptiles and small plants D Dinosaurs showed up just after the Earth was created.
Answers
Prokaryotes showed up on Earth long before any long reptiles and Small plants statement is incorrect about the Geologic Time Scale
what are the characteristic features of prokaryotic cell ?Prokaryotic cells are microorganisms include Bacteria and Archaea while other photosynthetic prokaryotes are cyanobacteria which do photosynthesis.
A prokaryotic cell is a single membrane bound cell where all the metabolic reactions occur within the cytoplasm, free-living or parasites in nature, they lack nuclear membrane.
In prokaryotes the organelles like Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent, whereas genetic material is present as a single chromosome;
The prokaryotic cell divide by binary fission where as the sexual mode of reproduction involves conjugation.
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Which BEST describes how metabolism is regulated eukaryotes? A. Starting and stopping metabolic processes are voluntary actions. B. Metabolism increases when the surrounding environment is temperature regulated. Enzymes regulate metabolic processes through a variety of feedback mechanisms including inhibition. Metabolic processes are the most highly regulated in bacteria.
Answers
Answer:
Enzymes regulate metabolic processes through a variety of feedback mechanisms including inhibition.
Explanation:
Eukaryotic metabolic regulation refers to the mechanisms by which metabolic anabolic and catabolic pathways are modulated in eukaryotic organisms. Anabolic enzymes are involved in the biosynthesis of molecules, while catabolic enzymes are involved in degradative pathways. Thus, enzymes regulate metabolic pathways by catalyzing chemical reactions at their corresponding rates of reaction. Moreover, feedback inhibition refers to those mechanisms occurring when one enzyme is inhibited by the end product of the metabolic pathway, enabling cells to regulate these products.
what is the most likely result of damage to the thylakoid membranes in a plant?
Answers
Answer:
Decrease in glucose production.
Explanation:
just did it in exam biology sem1 without looking at brainly, but here I am sharing my correct answers, ha, ha.
microscopic examination of cerebrospinal fluid reveals gram-positive rods. what is the organism? group of answer choices streptococcus listeria naegleria haemophilus neisseria
Answers
Listeria is the microscopic examination of cerebrospinal fluid reveals gram-positive rods.
cerebrospinal fluid reveals -CSF (shown in blue) is produced by the tissue that lines the ventricles (hollow spaces) in the brain. It circulates in and around the brain and spinal cord, protecting and nourishing them.
Listeria is a bacterial genus that lives as an intracellular parasite in mammals. Until 1992, there were 17 species known, each with two subspecies. 21 species had been identified by 2020. The genus is named after the British sterile surgery pioneer. Lister, Joseph
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Which is a frameshift mutation? substitution nonsense silent deletion
Answers
Answer:
deletion!
Explanation:
edge 2020
Deletion mutation is an example of frame-shift mutation.
FRAME-SHIFT MUTATION:Frame-shift mutation is a type of mutation in which the reading frame of a DNA (nucleotide) sequence is altered.
DNA or RNA is made up of nucleotides subunits, which is read in a particular pattern. When this reading pattern is shifted, frame-shift mutation is said to occur.
Deletion mutation and insertion mutation are the two kinds of mutation that results into frame-shift mutation.
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PLs, help me with this biology question, please! (I will mark brainliest)
Answers
Answer:
guc is Val = valine
aca is thr =threonine
aug is Met = methionine
uca is Ser = serine
Explanation:
hope this helps
what is pyrenoid?
good morning
Answers
Answer:
The pyrenoid, a dense structure inside or beside chloroplasts of certain algae, consists largely of ribulose biphosphate carboxylase, one of the enzymes necessary in photosynthesis for carbon fixation and thus sugar formation. Starch, a storage form of glucose, is often found around pyrenoids.
Name the primary lymphoid organs.
Name the secondary lymphoid organs
Answers
The primary lymphoid organs are bone marrow and thymus gland, where the T cells and B cells are generated from stem cells The secondary lymphoid organs are lymph nodes, spleen, tonsils, adenoids, and Peyer’s patches
The primary and secondary lymphoid organs are two significant components of the immune system. Both of these work together to keep the body healthy and free of disease.Primary Lymphoid Organs:The primary lymphoid organs are bone marrow and thymus gland, where the T cells and B cells are generated from stem cells.
B cells and T cells are produced in the bone marrow, and the T cells migrate to the thymus gland, where they mature into immune cells that fight against infection and other harmful agents. B cells mature in the bone marrow and are involved in the production of antibodies that neutralize pathogens.
Secondary Lymphoid Organs:The secondary lymphoid organs are lymph nodes, spleen, tonsils, adenoids, and Peyer’s patches, where the immune cells encounter and respond to the antigens. Antigens are harmful foreign substances that enter the body and induce an immune response.
They activate the immune cells and help in the production of antibodies and cytokines, which help the immune system to fight the pathogens effectively.The lymph nodes are small, bean-shaped structures that are scattered throughout the body. These nodes are responsible for trapping the antigens that enter the lymphatic system and initiating an immune response.
The spleen is the largest lymphoid organ, located in the upper left portion of the abdomen. The spleen filters the blood and removes the old and damaged red blood cells. Tonsils, adenoids, and Peyer’s patches are also lymphoid organs that are present in the respiratory and digestive system.
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which factor does not make the human body a favorable environment for many different microbes? multiple choice question. surface area dryness stable ph stable temperature constant nourishment
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The factor that does not make the human body favorable for various microbes is option B: dryness.
Because of the reason that human body is constantly nourished, has a surface area, steady pH, and stable temperature, the human body is an unfriendly environment for many different bacteria. However, some microorganisms may not thrive there due to the dryness.
Contaminated air, water, and food can cause infections in our bodies, as can dirty and infected utensils. Microbes can enter the human body through natural openings like the mouth, nose, urinary, and reproductive passages. They can also enter through wounds or bites that injures the skin barrier.
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Correct question is:
which factor does not make the human body a favorable environment for many different microbes? multiple choice question.
surface area
dryness
stable ph
stable temperature
constant nourishment
in order to make a recombinant vector, ligation of dna fragments would occur before growth of cells on a selective media.
Answers
Answer:
Its done by enzyme named DNA Ligase
Explanation:
What is λ, the discrete population growth rate, between:
10. Years 1-2? 142.9 / 284,2 = 0.5
11. Years 2-3? 67.2 / 142.9 = 0.47
12. Years 3-4? 115.1 / 67.2 = 1.71
13. Years 4-5? 72.3 / 115.1 = 0.63
By what percent is the population changing between:
14. Years 1-2? Growing/Shrinking (circle one) by _____%
15. Years 2-3? Growing/Shrinking (circle one) by _____%
18. Over the 5 year time period, what is the population growth rate, in percent?
Answers
The population growth rate over the 5-year period is a decrease of 75.7%
The symbol λ represents the discrete population growth rate.
From the given data:
λ between Years 1-2 = 0.511
λ between Years 2-3 = 0.471
λ between Years 3-4 = 1.711
λ between Years 4-5 = 0.63
To calculate the percent change in population between the given years, use the formula:
Percent change = (New value - Old value) / Old value * 100%
Percent change between Years 1-2 = (284.2 - 142.9) / 142.9 * 100% = 98.68% (Growing)
Percent change between Years 2-3 = (142.9 - 67.2) / 67.2 * 100% = 112.68% (Growing)
To calculate the population growth rate over the 5-year period, multiply the λ values for each year:
λ overall = λ1 x λ2 x λ3 x λ4 x λ5
\(= 0.511 * 0.471 * 1.711 *0.63\\= 0.243\)
The population growth rate over the 5-year period is a decrease of 75.7%, which means the population decreased by 75.7%.
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HELP PLS
Some traits have multiple alleles (more than 2). What are the phenotypes for each of the four different alleles in the example provided?
Answers
Answer:
Although an individual gene may code for a specific physical trait, that gene can exist in different forms, or alleles. One allele for every gene in an organism is inherited from each of that organism's parents.
C Protista itc
5. Which of the following is a heterotrophic eukaryote associated with the decomposition of dead organisms
a Protist
b. Herbivore
c Bacterium
I
d Fungus
Help
Answers
the classic gate-control theory suggests that pain is experienced when small nerve fibers activate and open a neural gate in the
Answers
The classic gate-control theory suggests that pain is experienced when small nerve fibers activate and open a neural gate in the spinal cord.
A mechanism in the spinal cord known as the "Gate Control Theory of Pain" allows pain signals to either be sent to the brain to be processed to intensify the potential for perceived pain or to reduce it in the spinal cord itself.
The "gate" is the mechanism that controls whether pain signals can pass through or not. The gate can either be "open" or "closed," either of which can occur:
Pain signals can pass through the gate if it is open, and they will be sent to the brain to make the pain feel real.
The perception of pain will be lost if the gate is closed, as pain signals will be prevented from reaching the brain.
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100 POINTS!!
Why does the spectrum of light traveling from a distant galaxy shift from a shorter wavelength to a longer wavelength?
A. because it has to travel through dense interstellar clouds
B. because of the effect of the Earth’s atmosphere
C. because of the presence of black holes in its path
D. because of the combination of the expansion of the fabric of space over the years and the receding velocity of the galaxy
Answers
Answer I think d
Explanation:
Answer:
The answer is D.
Explanation:
because of the combination of the expansion of the fabric of space over the years and the receding velocity of the galaxy
What are barrier islands? What protects the barrier islands?
Answers
Answer:
Barrier islands form in three ways. They can form from spits, from drowned dune ridges or from sand bars. Longshore drift is the movement of sand parallel to the shore caused by the angle of the waves breaking on the beach. When a storm such as a hurricane digs an inlet through the spit a barrier island is formed. Barrier islands are a specific type of island that lie parallel to the coastline of a larger mainland. They are separated from shore by a bay, lagoon or sound and because of where they are situated, they protect the coast from being directly impacted by storm waves or winds.
Explanation:
Which structures are similar in function, but do not indicate that the organisms are related?
analogous structures
homologous structures
vestigial structures
transitional structure
Answers
Answer:
A
Explanation:
analogous structures
Analogous structures are similar in function but do not necessarily suggest that the organisms are related.
What are analogous structures?The term “analogous” is used to describe biological structures that have similar or analogous functions but are not of the same evolutionary lineage. This means that the same biological structures are used by the same species for the same purposes, but the species are from different evolutionary origins. This type of evolution is called convergent evolution.
For example, similar structures of different species might have similar or equivalent functions, even though they originated from a different evolutionary point of view.
The wings of birds and insects are similar organs. Both birds and insects have wings that allow them to fly. However, their wings come from different ancestors. This is an example of analogous structure.
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Match each term to its description.Terms:AdaptationEndangered speciesEvolutionExtinctionDefinitions:A) A species that is at risk of extinctionB) Structural or behavioral characteristics favored in a particular environmentC) Change in a population over timeD) Death of all members of a species
Answers
Adaptation is a biologic mechanism or characteristic by which adjust to changes on the environment or to new environments. Therefore, its definition is B) Structural or behavioral characteristics favored in a particular environment.
Endangered species are species that are in danger, at risk of extinction. Therefore, its definition is A) A species that is at risk of extinction.
Evolution refers to changes and adaptations in a population over several generations. Therefore, its definition is C) Change in a population over time
Extinction refers to when all of the individuals of a species died, and the species no longer exist. Therefore, its definition is D) Death of all members of a species
Which dance resulted from the development of a culture technique for muscle cells
Answers
Rhythm Salsa resulted from the development of a muscle cell culture technique.
How to do cell culture?To obtain a cell culture, it is necessary to disaggregate the original tissue, which can be by mechanical force or enzymatic process. These cells are grown in an adherent layer in a single layer (monolayer) or in organoid format (3D culture) or in suspension.
With this information we can conclude that rhythm Salsa resulted from the development of a muscle cell culture technique.
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Does every cell of your body pretty much have the same copy of dna?.
Answers
Answer:
yes, they dont have the exact same dna but it is close
Which of these statements about cell division is true?
A. Cells divide at random times
B. The phases of cell division can occur in any order
C. New cells formed by cell division can replace dying cells in an organism
D. A newly formed daughter cell has less DNA than its parent cell
Answers
Answer:
its gonna be D
Explanation:
It can't be A, since cells only divide once they are past interphase
It can't be B, becuase cell division does have an order
It can't be C, becuase a dying cell is still a functioning one
And it is D becuase daughter cells are haploid, while parent cells are diploid
Answer:
C. New cells formed by cell division can replace dying cells in an organism.
Explanation:
I majored in Biology
compare and contrast connective tissue and muscular tissue?
please no links
Answers
What personal protective items should be worn for a lab activity that involves water?
O A. none, because water is safe
O B. gloves and closed toed shoes
O C. gloves, closed-toed shoes, and goggles
D. goggles and closed-toed shoes
Answers
C
Explanation:
gloves, closed-toed shoes, and goggles
Is the following sentence true or false? An average Star spends 90 percent of its life as a helium-burning main-sequence star.
Please help
Answers
Answer: The answer is True!
Explanation: I have my ways ;>
Answer:
true
hope you like it
introduction: identify a land feature and an ocean-floor feature; include their location. discuss the purpose of the model.
Answers
A land feature: The Grand Canyon located in Arizona, United States.
An ocean-floor feature: The Mid-Atlantic Ridge located in the Atlantic Ocean.
The Grand Canyon is a prominent land feature located in Arizona, United States. It is a steep-sided gorge carved by the Colorado River over millions of years. The Grand Canyon is renowned for its immense size, geological significance, and stunning natural beauty.
On the other hand, the Mid-Atlantic Ridge is an ocean-floor feature that stretches through the Atlantic Ocean. It is a long underwater mountain range where tectonic plates are spreading apart, resulting in the formation of new oceanic crust. The Mid-Atlantic Ridge is an important part of plate tectonics and provides valuable insights into Earth's geology and the process of seafloor spreading.
The purpose of the model is to highlight and study significant land and ocean-floor features. By identifying and understanding these features, scientists can gain insights into geological processes, landform formation, and the dynamics of Earth's surface.
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