sickle cell anemia is caused by a recessive mutant, s, at the hemoglobin (s) locus. you analyze the genotypes at the s-locus of 10,000 individuals of unknown geographic origin and find the following genotypic frequencies: ss: 0.36 ss: 0.48 ss: 0.16 which of the following statements best explains these genotypic frequencies? group of answer choices
A. ss genotypes have intermediate fitness.
B. ss genotypes have the highest fitness.
C. ss genotypes have the lowest fitness.
D. there is outbreeding in this population the population is in hardy-weinberg equilibrium.
Answers
"ss genotypes have intermediate fitness" best explains these genotypic frequencies. The answer is A.
The observed genotypic frequencies are not in Hardy-Weinberg equilibrium, as the frequency of the heterozygotes (Ss) is higher than expected. This suggests that there is some kind of selection pressure that favors the heterozygotes.
One possibility is that the heterozygotes have intermediate fitness, meaning that they are more fit than either of the homozygotes. This is known as heterozygote advantage.
Heterozygote advantage can occur when the heterozygote has a combination of alleles that are beneficial in different environments. For example, the sickle cell allele is beneficial in areas where malaria is prevalent, as it provides some protection against the disease.
However, the sickle cell allele is also harmful, as it can cause sickle cell anemia. Heterozygotes have one copy of the sickle cell allele and one copy of the normal allele, so they are protected against malaria but do not have sickle cell anemia.
Another possibility is that the population is not in Hardy-Weinberg equilibrium because there is outbreeding. Outbreeding is the mating of individuals from different populations.
This can increase the genetic diversity of the population and can also lead to the introduction of new alleles. If the population is outbreeding, then the observed genotypic frequencies may not be in Hardy-Weinberg equilibrium.
Therefore, the correct option is A, ss genotypes have intermediate fitness.
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Related Questions
Short -term stress ____ the number of _____ the body.
Answers
What is the ultimate energy for all life on Earth?
Answers
Answer:
Explanation:
There are many energy needed to survive, the basics are the sun, and oxygen
you find a small animal with eight legs crawling up your bedroom wall. closer examination will probably reveal that this animal has
Answers
Closer examination will reveal that this animal has the presence of chelicerae but the absence of antennae. The chelicerae are usually segmented pincerlike appendages.
Chelicerates are animals that have two body segments; i.e., a cephalothorax and an abdomen.
Chelicerata is a division within the Arthropoda. These animals have six pairs of appendages.
All chelicerates have eight legs and lack antennae.
Spiders, mites, scorpions, and relatives are chelicerates.
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which area of biotechnology involves tracking and confirmation of the spread of disease? a. aquatic biotechnology b. regulatory biotechnology c. agricultural biotechnology d. bioremediatoin e. forensic biotechnology
Answers
Agricultural biotechnology involves tracking and confirmation of the spread of disease.
What is biotechnology ?The application of organisms, cells, their components, and molecular equivalents for goods and services is known as biotechnology, which is the merging of natural sciences and engineering sciences. In 1919, Károly Ereky coined the phrase "biotechnology," which he used to describe the utilization of living organisms in the manufacturing of goods from raw materials.
The term "biotechnology" refers to a broad range of practices for altering living things for human benefit, dating back to the domestication of animals and the cultivation of plants, as well as "improvements" made to these through breeding programs that use artificial selection and hybridization. The technologies of cell and tissue culture, as well as genetic engineering, are also used today. According to the American Chemical Society, biotechnology is the use of biological organisms, systems, or processes by a variety.
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Do more underwater labs need to be created? Why or why not?
Answers
Answer:
It's opinions based so I'll give you some info that you can use for whatever you choose.
Explanation:
It costs lots of money as well as staff which is very expensive to maintain one. There is also extra costs required for developing, testing, and maintaining a water proof area.
leigh's disease is a mitochondrially inherited disease with symptoms that include seizures, fatigue, impaired reflexes, breathing problems, and ataxia. the pedigree shows the presence of leigh's disease in three generations. individual 4 had one daughter and two sons, and individual 6 had two daughters and one son. which of the individuals indicated are affected by leigh's disease? place the correct symbols on the pedigree showing affected and unaffected individuals.
Answers
Individuals 2, 3, 4, and 5 are affected by Leigh's disease. It is passed down from the mother to her offspring through the mitochondria.
Leigh's disease is a mitochondrially inherited disease,The pedigree shows the presence of Leigh's disease in three generations, indicating that it is maternally inherited.
Individuals 2, 3, 4, and 5 are affected by Leigh's disease because they show symptoms of the disease, such as seizures, ataxia, and impaired reflexes. Their symbols on the pedigree should be shaded in to indicate that they are affected.
Individuals 1, 6, 7, and 8 are not affected by Leigh's disease because they do not show any symptoms of the disease. Their symbols on the pedigree should be left unshaded to indicate that they are unaffected.
Individuals 4 and 6 both had children, but the information provided does not indicate whether their offspring were affected by Leigh's disease or not. Therefore, their symbols on the pedigree should be left unshaded.
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what happens to plants at night?
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Answer:
at night, the plants uptake oxygen and release carbon dioxide, which is called respiration
is it easier to distinguish which embryo represents each animal in the earliest stage of embryo development or in the latest stage? explain
Answers
The process of fetal development is meticulous and well-organized. It starts before you even realize you're pregnant and concludes when your baby is born.
Thus, There are numerous intricate stages that must be taken between conception and delivery.
Around the ninth week of pregnancy, the fetal stage of development starts and lasts until delivery.
At this point, the embryo formally transforms into a fetus. Around nine weeks into the pregnancy, the fetus develops its assigned sex, though your healthcare professional cannot yet see it on ultrasound.
Thus, The process of fetal development is meticulous and well-organized. It starts before you even realize you're pregnant and concludes when your baby is born.
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While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. The neurology resident told Sally that neurons and their dendrites, which send and reccive signals, made up the nerves and that the information was transported only from the PNS to the CNS. The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS.
Answers
The statement that is true regarding the cellular structure of a neuron is; The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. Option A is correct.
This statement accurately describes the composition of nerves and the direction of information transmission. Neurons, which consist of a cell body, dendrites, and an axon, are the basic building blocks of the nervous system. Dendrites receive signals from other neurons, while the axon transmits signals to other neurons.
Nerves, on the other hand, are composed of bundled axons of neurons and are responsible for transmitting information between the peripheral nervous system (PNS) and the central nervous system (CNS). The information flow typically occurs from the PNS to the CNS.
Hence, A. is the correct option.
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--The given question is incomplete, the complete question is
"While the neurology resident, Dr. Takahashi, was performing her examination, Sally asked her what a nerve was made of exactly. Which of the following statements is true regarding the cellular structure of a neuron? A) The neurology resident told Sally that axons of neurons make up the nerves that transfer information between the PNS and CNS. B) The neurology resident told Sally that the cell body, or some, made up the nerves and that this structure was what allowed the signal to travel between the CNS and PNS. C) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the PNS to the CNS. D) The neurology resident told Sally that neurons and their dendrites, which send and receive signals, made up the nerves and that the information was transported only from the CNS to the PNS."--
Why do living things need water, food, and space to live? To maintain homeostasis.
Answers
2.)Water- You could only survive for about three days without water. You get water from the fluids you drink and the food you eat.
3.)Air- Air is a mixture of several different gases, including oxygen and carbon dioxide. Most living things use oxygen in the chemical process that releases energy from food. Oxygen may come from the air or may be dissolved in water.
4.)Habitat- All organisms need a place to live that contains all of the things they need to survive. Some organisms, such as elephants, require a large amount of space. Other organisms may live their entire life in one place.
What are two ways translation is regulated?
Answers
Answer:
through changes in the availability or activity of the "helper"
Explanation:
This process involves many "helper" proteins, which make sure the ribosome is correctly positioned. Translation can be regulated globally (for every mRNA in the cell) proteins.
How many cells are there are each of the beginning of the cell cycle?
Answers
There is just one cell at the start of cell division or the cell cycle.
A mother cell divides twice, once through mitosis to produce two daughter cells and once through meiosis to produce four daughter cells.
What are cell division and cell cycle?The cycle of a cell's growth and division entails a variety of processes. A cell spends the majority of its time, known as interphase, developing, duplicating its chromosomes, and preparing to divide. The cell continues its division process through mitosis after exiting interphase. Each of the freshly produced cells, known as daughter cells, enters its own interphase and initiates a new cycle of the cell.
The two different cell division processes are meiosis and mitosis.
During the mitotic cell cycle phase, which is also known as division, replicated chromosomes are split into two new nuclei. Cell division known as mitosis creates genetically identical cells with a conserved chromosome number.
In sexually reproducing mammals, meiosis is a special type of germ cell division that produces gametes, such as sperm or egg cells. After two rounds of division, four cells with a single copy of each chromosome are created.
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You are looking through a microscope at stained cells that appear to have a stiff outer edge and smaller structures inside
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During which time period were mammals the dominant species on earth?.
Answers
Mammals became the dominant species on Earth during the Cenozoic Era, which began around 66 million years ago and continues to the present day.
The Cenozoic Era marked a significant shift in the Earth's ecosystems, as it followed the mass extinction event that wiped out the non-avian dinosaurs. With the disappearance of these dominant reptilian species, mammals were able to fill the ecological niches left vacant. Mammals diversified and adapted to a wide range of habitats, leading to their widespread dominance on the planet. During the Cenozoic Era, mammals underwent remarkable evolutionary changes and radiated into numerous species across various continents. They developed characteristics that allowed them to thrive in different environments, from forests to grasslands, and from aquatic to aerial habitats. The emergence of primates, including humans, was a notable development during this era. Mammals' success as the dominant species on Earth during the Cenozoic Era can be attributed to their unique traits and abilities. These include their warm-blooded nature, which provided them with better regulation of body temperature, allowing for increased activity and adaptability.
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The net number of atp molecules produced durign glycolysis from the metabolism of a single glucose molecule is closest to which of the followig
Answers
Scientists investigated the effect of oxygen levels on the net rate of carbon fixation in two types of plants.
The net rate of carbon fixation refers to the overall rate at which plants convert carbon dioxide (CO2) into organic compounds through photosynthesis. In this study, researchers examined how different oxygen levels affected this process in two types of plants.
Photosynthesis involves two main processes: the light-dependent reactions and the light-independent reactions (also known as the Calvin cycle). During the light-dependent reactions, oxygen is produced as a byproduct, while the light-independent reactions involve the fixation of carbon dioxide into organic molecules.
The oxygen levels in the environment can affect the net rate of carbon fixation in plants. Higher oxygen levels can inhibit the activity of the enzyme RuBisCO, which is crucial for the fixation of carbon dioxide. This inhibition can lead to a decrease in the net rate of carbon fixation. However, different plants may have different abilities to adapt to varying oxygen levels. Some plants, known as C4 plants, have mechanisms that minimize the inhibition of RuBisCO by oxygen, allowing them to continue fixing carbon efficiently even under higher oxygen conditions.
By investigating the effect of oxygen levels on carbon fixation in different types of plants, scientists can gain insights into the adaptations and physiological mechanisms that enable plants to thrive in various environments.
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A chromosome has the following segment: TUVWX*YZ, where * represents the centromere. A tandem duplication chromosome mutation would produce which of the following chromosomes? Group of answer choices
TXWVU*YZ
TUTUVWX*YZ
TUX*YZ
TUVWXXWV*YZ
Answers
A tandem duplication chromosome mutation would produce TUVWXXWV*YZ chromosome.
A tandem duplication mutation is a type of mutation in which a segment of DNA is duplicated one or more times, resulting in an increase in the copy number of that segment. It arises when the chromosomal segment duplicates, often due to replication errors. Such a duplication occurs when the duplicated segment of DNA is located adjacent to the original segment and is oriented in the same direction.In the given chromosome, TUVWX*YZ, where * represents the centromere, a tandem duplication mutation would produce TUVWXXWV*YZ chromosome. This means that the segment "WX" has been duplicated and inserted in the original segment to make a longer segment "XXWV". Thus, the final chromosome would contain two copies of the duplicated segment, resulting in an increase in the copy number of that segment.
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Is the Chernobyl elephants foot still there?
Answers
Yes, the "Chernobyl Elephant's Foot" is still there, and it remains a highly radioactive and dangerous object.
It refers to the melted fuel and other materials that accumulated at the bottom of the reactor after the catastrophic explosion at the Chernobyl nuclear power plant in Ukraine in 1986. The material formed a solid mass of highly radioactive material that was initially too hot to be approached or safely handled.
Access to the Elephant's Foot is limited due to the high levels of radiation it emits, and it is still considered one of the most radioactive objects on earth. It is located in the basement of the destroyed reactor, and access to the area is restricted to highly trained and equipped individuals wearing protective gear.
The Elephant's Foot serves as a reminder of the devastating impact of the Chernobyl disaster and the dangers of nuclear power. It is a testament to the immense power of nuclear reactions and the potential consequences of a nuclear accident.
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Large bodies of water help to stabilize air temperatures. An ice cube cools water by adding coldness. Evaporative cooling prevents terrestrial organisms from overheating. Water is slower to warm up or cool off than most materials.
Answers
Answer:
Water is slower to heat than most materials.
Explanation:
There is a physical property called "specific heat". This property determines the amount of temperature necessary to change 1ºC in the temperature of the materials. The higher the specific heat of the material, the slower it will heat up.
The water has an extremely high specific heat, which means that it will slowly heat up to an extremely high temperature. The specific heat of the water is greater than most materials and this explains why high variations and external temperature changes almost do not cause changes in the water of the picisnas, for example.
the process that occurs first during normal cell division is
duplication of the chromosomes
a stage of mitosis during which the nuclear membrane and nuclear cannot be seen is
anaphase
when mitotic cell division is completed , the daughter cells contain
the same amount of DNA as the parent cell
unlike animal cells, plant cells
have no centrioles
mitosis occurs most frequently in
unspecialized cells
in binary,
daughter cells are of equal size
t type of asexual reproduction found in both hydra and yeast is
budding
a horizontal stem with buds that grows along the surface of the ground is
runner
which indicates that an animal cell is undergoing mitotic cell division?
centrioles migrate in opposite direction
the star- shaped structures that form the centrioles are the
asters
the spindle that is present during mitotic cell division is made up of
asters
which statement best describes the process of asexual reproduction
it involves the production of genetic copies.
which statement concerning an organism produced by cloning is correct?
the clone is genetically identical to its parent
plants with desirable qualities can be rapidly produced from the cells of a single plant by
cloning
asexual reproduction differs from sexual reproduction in that, in asexual reproduction
new organisms are usually genetically identical to the parent
when complex plants are produced by cloning which process is most directly involved
mitotic cell division
if a lobster loses a claw, it is capable of growing a new one. what process make this possible?
mitosis
organisms that reproduce asexually usually do so by a form of cell division called
mitosis
the process of mitotic cell division normally results in the production of
two cells with the same number of chromosomes as the parent
each of the two daughter(or offspring) cells that result from the normal mitotic division of the original parent cell contains
the same number of chromosomes and genes identical to those of the parent cell
all types of asexual reproduction involve the process known as
mitosisth
Answers
Duplication of chromosomes occurs first during normal cell division.
During Interphase, DNA or chromosomes are duplicated.
Chromosome duplication takes place in the eukaryotic cell cycle's "S phase" (the phase of DNA synthesis) of Interphase, while chromosome segregation takes place in the "M phase" (the mitosis phase).
In meiosis, the chromosome duplicate (during interphase), and during the first division, known as meiosis I, homologous chromosomes exchange genetic information (chromosomal crossover). In meiosis II, the daughter cells divide once more, severing sister chromatids to create haploid gametes.
A united pair of identical sister chromatids make up each chromosome today. The sister chromatids split apart and go to the opposing ends of the dividing cell during mitosis. Two identical cells with 2N chromosomes and 2X DNA each emerge from mitosis.
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Help me PLEASE! Choose one answer! First one to answer get Brainliest!
19.) Which fossil appears to have lived most recently?
A.) Coral
B.) Gastropod
C.) Trilobite
D.) Fern
Answers
Answer:
coral
Explanation:
because coral is coral
Answer:
bosh
Explanation:
corvette corvette
three factors that affect the jet stream
Answers
Answer:
The seasons of the year, location of low and high pressure systems and air temperature all affect when and where a jet stream travels.
Explanation:
unlike bacterial infections, populations of pathogenic viruses do not evolve resistance to antiviral drugs.
Answers
Unlike bacterial infections, populations of pathogenic viruses do not evolve resistance to antiviral drugs. The above statement is false.
Antiviral drug resistance is a growing concern in populations of immunocompromised patients because persistent viral replication and extended drug exposure select resistant types of viruses. By correlating distinctive viral mutations with resistance to different medications as identified by phenotypic testing, rapid diagnosis of resistance can be achieved. Optimizing host variables and medication delivery, choosing alternate treatments based on an understanding of the processes underlying resistance, and creating novel antivirals are all components of managing drug resistance.
This article talks about hepatitis B and herpesvirus drug resistance. Antiviral drug resistance is a growing concern in populations of immunocompromised patients because persistent viral replication and extended drug exposure select resistant types of viruses. Associating typical viral mutations with resistance to specific medications as revealed by phenotypic testing allows for the quick detection of resistance.
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15. Each of the following is a density-dependent limiting factor EXCEPT
A. crowding
B. competition
C. disease
D. seasonal cycles
Answers
Answer: d, seasonal cycles
Explanation: it doesn't affect the population.
what is the hierarchical structural organization in a multicellular organism
Answers
Answer:
cells, tissues, organs, and systems
Answer:
cells, tissues, organs, and systems
Explanation:
Low-density lipoprotein is brought into the cell by receptor-mediated endocytosis. True or false?.
Answers
Low-density lipoprotein is brought into the cell by receptor-mediated endocytosis is referred to as true statement.
What is Low-density lipoprotein?This is also referred to as bad cholesterol because it transports cholesterol in the blood thereby leading to the clogging of the blood vessels and may cause different types of diseases such as high blood pressure etc.
This type of lipoprotein transports all fat molecules around the body in extracellular water and are brought into the cell by receptor-mediated endocytosis which imports the macromolecules from the extracellular fluid thereby making it the correct choice in this context.
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For each sediment in the list below, record in the table whether you would be more likely to find the sediment near location A or location B in
the diagram of the stream.
SEDIMENT LIST
cobble
Silt
Clay
Sand
Boulder
IN THE PICTURE B IS CUT OFF, SORRY ABOUT THAT! B IS LOCATED RIGHT AT THE BOTTOM OF THE PICTURE.
Thanks so much for your help!
Answers
Silt, clay, and Sand would be more likely to find the sediment near location A, while cobble and boulder would be more likely to find the sediment near location B in the diagram of the stream.
What are Sediments?Sediments may be defined as naturally occurring elements or materials that are broken down into small pieces of fragments due to weathering and erosion.
The sediments of silt are found in soil along with other types of sediments such as clay, gravel, and sand. While cobble and boulders are those sediments that are found in the mountainous part of the geographical locations.
Thus, it is well described above.
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(GIVING BRAINLIEST)
Which statement about the ocean is true?
A) No evaporation or precipitation in the water cycle occurs over the ocean.
B) Most evaporation and precipitation in the water cycle occur over the ocean.
C) All evaporation and precipitation in the water cycle occur over the ocean.
D) Evaporation, but not precipitation, in the water cycle occurs over the ocean.
Explain why.
Answers
Answer:
c is the answer ..............
Answer:
the answwer is v orc
Explanation:
i dont know i jsut thought that because the ocean is huge and there are 4 of them I dont know, think b right?
lace the structures the sperm must pass through in the correct order: sperm cells penatrating secondary oocyte 1 2 3
Answers
The structures that a sperm passes through are va-gina, followed by cervix, followed by the uterus, fallopian tubes and finally the egg.
First is the va-gina. During se-xual intercourse, sperm is ejaculated into the va-gina. The cervix is the second stage is basically is the narrow opening at the lower end of the uterus. Sperm must pass through the cervix to enter the uterus.
The uterus, or womb, is where the fertilized egg implants and develops into a fetus. Sperm swim through the uterus in search of the fallopian tubes. The fallopian tubes are basically considered as the site of fertilization. If sperm encounters a secondary oocyte in the fallopian tube, fertilization can occur. If a sperm successfully penetrates the secondary oocyte, it fertilizes the egg, resulting in the formation of a zygote.
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PLS HELP IT’S DUE TODAY
Answers
The answers are:
recombinant crossing overoppositechromosomegenotypeindependentsamechromosomeWhat is crossing over?When non-sister chromatids of homologous chromosomes exchange genetic material during meiosis, novel allelic combinations are created in the daughter cells.
Each chromosome is present in two copies in each diploid cell. two gametes: hers from the father's gametes and one from the mother's. Homologous chromosomes are the name for these pairs of chromosomes, which each descended from a single parent. A diploid creature initially generates haploid gametes through meiosis before engaging in sexual reproduction. Homologous chromosomes align and genetic material is exchanged during prophase I of meiosis. As a result, a portion of the new chromosome—which contains a combination of genes from both the maternal and paternal chromosomes—is recombinant.
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There were 22 ice fishing shack on a lake each shack had a 9 pound of firewood firewood were sold in 3 pound bundles how many bundles were there in all
Answers
There were 66 bundles of firewood in total.
There were a total of 22 shacks, and each shack had 9 pounds of firewood. So the total amount of firewood is:
22 × 9 = 198 pounds.
Since firewood was sold in 3-pound bundles, we can find the number of bundles by dividing the total amount of firewood by 3:
198 pounds / 3 pounds/bundle = 66 bundles.
An ice fishing shack is a small shelter or structure used by ice fishermen on frozen lakes or rivers to protect themselves from the elements while fishing. The shacks are usually made of wood or metal and can be dragged onto the ice using sleds or trailers.
They often have holes in the floor to allow for fishing through the ice, as well as heaters or stoves to keep the interior warm. Ice fishing shacks come in a variety of sizes and styles, ranging from simple one-person tents to large, fully-equipped cabins.
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