In a certain population of mice, the frequency of the brown fur allele is 0. 4 and the frequency of the black fur allele is 0. 6. In 10 generation, the frequency of the brown fur allele drops to 0. 3. What has happened in this population?.
Answers
In the given population of mice, there has been a change in the frequency of the brown fur allele over the course of 10 generations. The initial frequency of the brown fur allele was 0.4, and after 10 generations, it has decreased to 0.3. This change in allele frequency suggests that there has been a decrease in the proportion of mice carrying the brown fur allele over time.
The decrease in allele frequency could be due to various factors such as natural selection, genetic drift, or migration. If the brown fur allele is associated with a disadvantageous trait or has lower fitness compared to the black fur allele, natural selection may have favored mice with the black fur allele, leading to a decrease in the frequency of the brown fur allele over generations.It is important to note that without additional information about the specific mechanisms influencing allele frequencies in the population, it is difficult to determine the exact cause of the change. Further analysis and study of the population dynamics would be necessary to gain a more comprehensive understanding of the observed change in allele frequency.
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Related Questions
What is the resistance of a circuit with a voltage of 10 volts (V) and a current of 5 amps (A)? Use Ohm’s law to calculate the resistance.
The resistance of a circuit with a voltage of 10 V and current of 5 A is
ohms.
Answers
Answer: R = 2 ohm
Explanation: Based on the Ohm's law
U = R*I ---> R = U / I
R = 10 / 5
R = 2 ohm
Answer:
Answer : The resistance of a circuit is 2 ohm.
Explanation:
Using Ohm's law :
Or,
where,
R = resistance of a circuit = ?
V = voltage of circuit = 10 volts = 10V
I = current flowing in a circuit = 5 A
Now put all the given values in the above formula, we get the resistance of circuit.
Therefore, the resistance of a circuit is 2 ohm.
Open Ended - Describe the components and interactions of one body system. (Cardiovascular)
Answers
Solution:
The cardiovascular system consists of two pumps (left and right ventricle) and two series of circuits:
Pulmonary circuit and systemic circuit.
The systemic circuit:
This circuit begins in one of the great vessels, the aorta, which branches into smaller vessels to the capillaries that finally reach the organs.
Now, the vascular components include arteries, arterioles, and capillaries:
Arteries: they are thick-walled vessels, the blood that circulates in these vessels has high pressure and they carry oxygenated blood to the body's tissues.
Arterioles: they are branches of the arteries.
Capillaries: they have larger surface areas and cross-sections and are the sites of exchange for nutrients, water, and gases.
on the other hand, the vascular components also include the venous circuit, in this circuit, the venules (smaller veins) join to form larger veins until the larger vein, the vena cava, returns blood to the heart:
Veins: thin-walled vessels where blood circulates with low pressure. These vessels contain most of the blood that flows in the cardiovascular system.
Venules: they are the component with the highest permeability in the microcirculation.
Pulmonary circuit:
In the pulmonary circuit, deoxygenated blood leaves the heart's right ventricle and passes into the pulmonary artery (pulmonary artery trunk). The pulmonary artery trunk divides into the right and left pulmonary arteries.
The right and left pulmonary arteries carry deoxygenated blood to the arterioles and capillary beds in the lungs. In this location (lungs), carbon dioxide is released and oxygen is absorbed. The oxygenated blood then passes from the capillary beds through the venules into the pulmonary veins. The pulmonary veins carry it to the left atrium of the heart. The pulmonary arteries are the only arteries that carry deoxygenated blood, and the pulmonary veins are the only veins that carry oxygenated blood.
The heart:
The heart is located between the lungs in the center of the chest (inferior mediastinum), behind, and slightly to the left of the breastbone.
The heart is wrapped in a membrane composed of two layers, this membrane is called the pericardium.
The outer layer of the pericardium surrounds the source of the major blood vessels of the heart and is attached to the spine and diaphragm by ligaments.
The inner layer of the pericardium is attached to the heart muscle (myocardium). A layer of fluid separates the two layers of the membrane, allowing the heart to move as it beats while remaining attached to the body.
The heart has four chambers.
The upper chambers are called atriums and there are two of them: left atrium and right atrium.
On the other hand, the lower chambers are also two and are called left ventricle" and "right ventricle.
A muscular wall called the septum separates the left and right atria and the left and right ventricles.
The left ventricle is the largest and strongest chamber in the heart. In fact, the walls of the left ventricle are strong enough to push blood through the aortic valve to the rest of the body.
Valves are those that control the flow of blood in the heart. These valves are 4.
The tricuspid valve controls blood flow between the right atrium and the right ventricle.
The pulmonary valve controls blood flow from the right ventricle to the pulmonary arteries. Note that the pulmonary arteries carry blood to the lungs to oxygenate this blood.
The mitral valve allows oxygenated blood from the lungs to pass from the left atrium to the left ventricle.
The aortic valve allows oxygen to pass from the left ventricle to the aorta, the largest artery in the body, which carries blood to the rest of the body.
On the other hand, the heart works through a special network of the myocardium, which stimulates the heart to contract. This electrical signal originates from the sinoatrial (SA) node located in the upper part of the right atrium.
Electrical impulses from the sinoatrial node travel through the muscle fibers of the atria and ventricles, stimulating their contraction.
Kendrick holds the rubber blue ball halfway up the ramp and releases ir (figure 1).The ball rolls down the ramp and along the floor beyond the end of the ramp. What force caused the ball to roll down the ramp?
Answers
The force that caused the rubber blue ball to roll down the ramp is gravity. When Kendrick held the ball halfway up the ramp and then released it, the force of gravity began to act on the ball and it started to roll down the ramp.
A ramp is an inclined plane that reduces the amount of force required to move an object to a higher level. The force of gravity, which is an attractive force between any two objects in the universe, acts on objects in the direction of the center of the Earth.
This force causes objects to fall toward the ground. When the rubber blue ball was released from the midpoint of the ramp, it began to move in the direction of the force of gravity, which caused it to roll down the ramp. The force of gravity was able to overcome the ball's inertia and caused it to accelerate down the ramp. Once the ball rolled off the end of the ramp, it continued to move forward due to its inertia.
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The process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully
expounded by Charles Darwin and is now believed to be the main process that brings about evolution
True
False
Answers
True
The process is called natural selection and was first explored by Charles Darwin in the 19th century.
NATURAL SELECTION is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. This concept was first developed by Darwin (both statements are TRUE).
Darwin referred to evolution as the process of 'descent with modification'.The main mechanism by which organisms evolve to adapt to their environments is natural selection.The theory of evolution by natural selection was developed by Darwin and it is now widely accepted as the main cause of evolution. According to Darwin, species change (evolve) over time, thereby giving rise to new species that share a common ancestor.In conclusion, NATURAL SELECTION is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of evolution by natural selection was first developed by Darwin (both statements are TRUE).
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Select the correct answer from each drop-down menu.
A mouse had a gene sequence of GTT coding for leucine, an amino acid.
mutation in this gene led to the formation of GTG. However, the amino acid formed was leucine, despite the mutation. This is a
mutation for the mouse.
Answers
The mutation that occurred in the mouse is a silent mutation since it does not affect the amino acid sequence in the protein.
What is a mutation?A mutation is a change that occurs in the sequence of nucleotides in the DNA of organisms.
A mutation can either have deleterious effect on the organism or have no effect at all. Mutations that do not have any effect on the organism are known as silent mutations.
Silent mutations do not affect the sequence of amino acids that make up a protein.
Therefore, the mutation that occurred in the mouse is a silent mutation since it does not affect the amino acid sequence in the protein.
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What is one environmental drawback of the fracking process of extracting natural gas. (not related to WATER use).
Answers
One environmental drawback of fraction is Air pollution due to the toxic chemicals used during fracking.
Fracking also increases greenhouse gases, and causes earthquakes.
Which of the following is NOT a
disadvantage of nuclear power?
A. large fuel supply
B. thermal pollution
C. high construction costs
D. high environmental impact from accidents
Answers
Answer:
C. high construction costs
Explanation:
7. __________ represent the different variations of a gene. Alleles Traits Chromosomes None of the above
Answers
Alleles represent the different variations of a gene.
The correct option is option a.
An allele is basically defined as an alternative form of a particular gene and an allele is basically one of the members of a pair of the genes which is found to be located at a specific position on a particular chromosome.
They basically happen to determine the distinct traits which can be passed on from one generation to the other generation through the process of sexual reproduction. The allele can be either dominant or it can be a recessive allele.
Hence, the correct option is option a.
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PLEASE HURRY
Which of the following is the best description of the plasma membrane's basic
structure?
Answers
Answer:
well plzz hurry
Explanation:
well you need to go and kick A>S>S
Answer:
theres no choices lol
Explanation:
ANSWER PLEASEEEEEEEEE
Answers
Explanation:
Respiration occurs in the mitochondria while photosynthesis occurs in chloroplasts. That being said we automatically know that C is incorrect. Photosynthesis does not occur in animals only in plants so we can cross off B as well. Photosynthesis is the process of plants making their own sugar while cellular respiration is the process of breaking down the sugar to convert in into energy. Meaning that respiration does not happen during photosynthesis, only after it, so it has to be A.
what is the scientific name for false wireworm Bettle
Answers
Explanation:
Tenebrionidae is the scientific name for false wireworm bettle.
A factory employee spends two hours putting together a car part. A machine can do the same job in thirty minutes. Which statement best describes the time-effectiveness of this scenario? A. The employee is four times as time-effective as the machine. B. The machine is half as time-effective as the employee. C. D. The employee is half as time effective as the machine. E. The machine is four times as time-effective as the employee
Answers
Answer:The machine is four times as time-effective as the employee.
Explanation:
Answer:
The machine is four times as time-effective as the employee.
Explanation:
on edge
2. Which statement correctly describes pathogens?
A. They are always bacteria.
B. They are in your body only when you are sick.
C. They break down dead organisms.
D. They cause disease.
Answers
what are parts of a flower?
Answers
Answer:
Sepal: The outer parts of the flower (often green and leaf-like) that enclose a developing bud. Petal: The parts of a flower that are often conspicuously colored. Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. ... Stigma: The part of the pistil where pollen germinates
Explanation:
Why is the water cycle important for ecosystems?(1 point) The water cycle helps recycle and transport carbon around the planet. The cycle replenishes the carbon supply of ecosystems. The water cycle uses photosynthesis to make clouds. These clouds make surface water that animals drink to survive in their ecosystem. The water cycle permanently removes water from underground and large bodies of water and transports it to terrestrial ecosystems that need water. The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Answers
Answer: The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Explanation:
The water cycle simply refers to how water continuously move within the Earth. It is also called the hydrological circle. Water cycle depicts many processes such as how water evaorates into vapor, how clouds are formed through condensation and then sent back to the Earth as either rain or snow.
Based on the options given, the water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems.
Answer:
The water cycle helps recycle and transport water around the planet. The cycle replenishes the water supply of ecosystems
Explanation:
trust me i did the test
If a woman is homozygous for red hair and her husband is homozygous for brown hair, what is the probability that they will have a redheaded child?
A. 0%
B 100%
c. 50%
Answers
To solve this we must be knowing each and every concept related to homozygous. Therefore, 0% is the probability that they will have a redheaded child. The correct option is option A.
What is homozygous?Having identical genes for only one attribute is what is meant by being homozygous. Additionally, an allele denotes a single distinct variant of a gene.
Since it is unknown which characteristic is recessive. If we think of brown hair as the dominant characteristic, denoted by R, and red hair as the recessive trait, signified by R. Dad is RR, while mom is RR. All offspring will be heterozygous since they will all be Rr. The likelihood of producing a kid having red hair from either the original parents is thus 0%.
Therefore, 0% is the probability that they will have a redheaded child. The correct option is option A.
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The products of chemosynthesis are:
glucose
oxygen
carbon dioxide
A and B
Answers
Answer:
Pure sulfur and sulfur compounds are produced as by-products
What causes decrease in genetic variation?
Answers
Genetic variation decreases as a result of inbreeding, genetic drift, restricted gene flow, and small population sizes.
There aren't many variations among individuals in a species with low genetic diversity since there aren't many different gene alleles present. This would imply that there are less chances to adjust to environmental changes. Due to habitat degradation, low genetic diversity is frequently observed.
The difference in DNA between individuals or communities is known as genetic variation. Mutation and genetic recombination are two of the many processes that cause genetic variation. Genetic variety is primarily caused by mutations, although it is also influenced by other processes including genetic drift.
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What is your best estimate for the natural solute concentration inside a potato cell? Explain how your data is evidence for that estimate.
This was for a potato osmosis lab
Answers
The natural solute concentration inside a potato cell have an osmotic potential of 0.2 M.
Potatoes have an osmotic potential of 0.2 M, which is the isotonic point of no net movement of water molecules across the potato cell's membrane.
What is osmotic potential?
Osmotic potential is known as the results from dissolved solutes in cell sap and is proportional to solute concentration and inversely proportional to cell water volume.
The potato was placed in 0.1 M of glucose and experienced a positive change in mass and this shows that the potatoes have a low solute concentration.
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where did the plant get energy it needs to grow ?
Answers
Answer:
the sun, air, water it gets
Answer:.
They get their energy from the sun. They get their food by doing a process called photosynthesis
Explanation:
scientists found fossils of 2 animals belonging to same species but occupy different regions. how is that possible?
a) animals migrated
b) they all roamed what was once one big continent
c) someone spread the fossils
d) a natural disaster forced them to seperate
Answers
The possibility that explains the presence of fossils of the same species in different regions is that the animals migrated. The correct answer is A.
Migration is a common phenomenon observed in various animal species. Animals move from one region to another in search of food, suitable habitats, or favorable environmental conditions.
This movement allows them to adapt to different environments and exploit available resources. As animals migrate, they can leave behind fossils in the regions they previously inhabited.
When animals belonging to the same species migrate to different regions, their populations become geographically separated.
Over time, the separated populations may undergo different evolutionary pressures, leading to the development of distinct traits and adaptations.
These changes can eventually result in the formation of different subspecies or even new species. Fossil evidence of the same species found in different regions supports the idea that migration played a role in the dispersal and distribution of these animals.
Therefore, the presence of fossils of the same species in different regions is indicative of past migration events and the subsequent divergence of populations. Therefore, the correct answer is A.
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Why is mass selection considered a form of selective breeding?
Answers
Mass selection is considered a form of selective breeding because it includes selection of individuals from a large group organisms.
What is mass selection?Mass selection is defined as a type of selective breeding in which two species are chosed and breeded with one another. This process is used to get the desired characteristic organism.
So we can conclude that mass selection is considered a form of selective breeding because it includes selection of individuals from a large group organisms.
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Evaluate the effects of severe combined immune deficiency on a child born
without T cell immunity.
Answers
The immune system of a child with SCID is minimal or absent. The T cells that fight infection make up the immune system.
Is it possible for a baby to be born with no immune system?Severe combined immunodeficiency (SCID) is a rare genetic disorder that affects the immune system and can have life-threatening effects. A form of primary immune deficiency, it is. Each year, one in 58,000 babies in the United States is born with SCID.
Do T cells exist in newborns?The majority of T cells in infants contain TRECs. A test known as polymerase chain reaction (PCR) can reliably detect the TRECs even on dried blood samples due to their small size.
How does SCID affect T and B cells?SCID is a rare and fatal syndrome caused by multiple genetic factors in which natural killer (NK) lymphocytes, T lymphocytes, and B lymphocytes fail to function together. Due to these flaws, people are extremely susceptible to serious infections.
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Your friend tells you that she saw a bright object with a
tail that lasted a few moments in the night sky. She thinks it
might have been a comet. Is she correct? Why or why not?
If not, what did she likely see? Write your answer below in
complete sentences.
Please Hurry!!! Thank you
Answers
probably not, it misht be a satelite, and it burns when it enter in our atmosphere
Answer:
no it was most likely a meteor because meteors burn quick in the atmosphere
Explanation:
which of the following statements about loss of heterozygosity (loh) in cancer is true? loh occurs when a person inherits two different alleles of a gene from their parents. loh is a common event in the development of cancer. loh only affects tumor suppressor genes. loh only occurs in inherited cancers.
Answers
The statement that is true about the loss of heterozygosity (LOH) in cancer is that it is a common event in the development of cancer. LOH refers to the loss of one copy of a gene and the corresponding allele on the other chromosome becomes homozygous.
This leads to a reduction in heterozygosity in the genome. LOH can occur due to various mechanisms like deletion, recombination, and mitotic recombination. In cancer, LOH can result in the inactivation of tumor suppressor genes or the activation of oncogenes. Thus, LOH plays a significant role in the development and progression of cancer. However, it is not true that LOH only affects tumor suppressor genes or that it only occurs in inherited cancers. LOH can affect any gene and can occur in both inherited and non-inherited cancers. Studying LOH in cancer can help in identifying genes that are important for tumor development and can lead to the development of new therapies.
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Asexual reproduction is the when only one parent contributes genetic information creating an identical offspring. true Or false?
Answers
Answer:
That is a true statement
The order of the nucleotides in the DNA molecule determine the shape of the proteins made by the cell. The shape andchemical nature of a protein determines what job it can do within an organism. This is an example of which scientificcross-cutting concept?A) Structure and FunctionB) Scale, proportion, and quantityC) Energy and MatterD) Stability and Change
Answers
A crosscutting concept is one that has applications in different branches of science.
The ones we have in the answer options are the following:
• Structure and Function,, which says that the ,shape, of an object gives it certain, properties and functions.
• Scale, proportion, and quantity,, which refer to what is important when studying something can be affected by the scale of it, as well as to the proportional relationships between quantities when the scale changes.
• Energy and Matter,, regarding the tracking of changes and flow of energy and matter in a system.
• Stability and Change,, which tells us that every system has conditions that affect its stability, and these need to be considered.
In the question, they are talking about how the order of the nucleotides in the DNA determines the amino acids of a protein, and thus its shape and chemical properties, which determine the function that the protein has.
This means it refers to the cross-cutting concept of structure and function, so the right answer would be A.
The diagram shows a cross section of a eukaryotic cell.
Cytoplasm
How does the cytoplasm interact with the other organelles in the cell?
A. Cytoplasm creates lipids that are absorbed by other organelles in the cell.
B. Cytoplasm removes waste from other organelles and transports it out of the cell.
C.
Cytoplasm translates genetic information into proteins for other organelles in the cell.
D
Cytoplasm provides support to the other organelles and helps maintain the shape of the cell.
Answers
Maria pushes a ball, and the ball rolls across the table. She wants to make the ball roll faster.
Maria needs to push the ball
A.
with more strength.
B.
on a different table.
C.
on the other side of the table.
D.
with less strength.
Answers
Answer: A. with more strength
Explanation:
Literally get a pencil or something and push it once normally than another time harder.
(Hopefully you'll see that it rolls faster.)
Whats the square root of 69 cause ive been trying to find all night
Answers
Answer:
the square root of 69 is 8.306
Answer:
8.3 or 8 3/10
Explanation: