The correct answer is:
A. During meiosis, alleles can switch between homologous chromosomes through crossing over.
Crossing over, which occurs during meiosis, is the process where homologous chromosomes exchange genetic material. This can result in the swapping of alleles between linked genes, leading to new combinations of alleles on the chromosomes. As a result, linked genes may appear to follow the law of independent assortment, where alleles are randomly assorted into gametes.
During meiosis, crossing over allows alleles from linked genes to switch places and appear to follow the law of independent assortment.
Explanation:In genetics, alleles from linked genes sometimes appear to follow the law of independent assortment due to the phenomenon of crossing over during meiosis. Crossing over occurs when homologous chromosomes exchange genetic material, resulting in the recombination of alleles on different chromosomes. This process can lead to the separation of linked alleles and the appearance of independent assortment.
For example, let's consider two genes located close to each other on a chromosome. Initially, the alleles for these genes are linked and inherited together. However, during crossing over, a break can occur between the genes, allowing the alleles to switch places. As a result, the alleles can end up on different chromosomes, leading to independent assortment.
Therefore, option A is the correct answer. Crossing over during meiosis allows for the exchange of alleles between homologous chromosomes and breaks the link between genes, resulting in the appearance of independent assortment.
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Correctly identify the following situation as an example of positive OR
negative feed back. When blood pressure increases, signals are sent to the
brain from the blood vessels. Signals are sent to the heart from the brain,
and heart rate slows down, thus helping blood pressure to return to
normal. *
1.Positive Feedback
2.Negative Feedback
Answer:
Negative Feedback
Explanation:
Positive feedback is only used to enhance the stimulus. In this case, the blood pressure was sent back to homeostatic levels which means that the stimulus was reversed in order to reach dynamic equilibrium.
Which statement is true about the differences between plant and animal cells?
A) Only plant cells have cytoplasm.
B) Animal cells are always larger than plant cells.
C) Plant cells have vacuoles, but animal cells do not.
D) Only plant cells have chloroplasts that help make food during photosynthesis.
The statement which is true about the differences between plant and animal cells is that only plant cells have chloroplasts that help make food during the photosynthesis. Thus, the correct option will be D.
What are plant cells and animal cells?Plant cells have a cell wall, as well as an inner cell membrane. In plants, the cell wall surrounds the cell membrane. This cell wall gives the plant cell its unique rectangular shape which is absent in animal cell. Animal cells simply have a cell membrane, but no a cell wall.
The statement which is true about the differences between plant and animal cells is that only plant cells have chloroplasts that help make food during the photosynthesis.
Therefore, the correct option will be D.
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Complete the paragraph on freshwater ecosystem
Rivers often start from
Science
Answer:
Can i have the braniest pls
Explanation:
Below is a diagram of the male reproductive system in humans.
The reproductive function of the organ indicated by the arrow is to
A. mix the sperm with fluids to make semen
B. transfer sperm cells to the urethra
C. store sperm cells until they mature
D. produce new sperm cells
The indicated parts serves to mix the sperm with fluids to make semen Option A
What is the male reproductive system?The group of organs and tissues known as the male reproductive system are in charge of producing male s--ex hormones as well as sperm creation, storage, and delivery. Its main job is to create and transport sperm for fertilizing eggs and starting the reproductive process.
The paired seminal vesicles are glands that create seminal fluid, a fluid rich in nutrients that feeds and shields the sperm.
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In which of the following scenarios will natural selection most likely occur?
a
Very little genetic variation is present in the species
b
No reproductive barriers present in the area were the species is located
c
A geographical area that has limited food to support the individuals living there
d
Ideal environmental conditions resulting in less competition between individuals
Please Hurry
Answer:
C
Explanation:
There is limited food so only the individuals who can get the food will survive.
Natural selection can be defined as the process of selection of organisms that are better adapted to their environments. It refers to the changing and adaptation in the organisms.
Natural selection is based on the concept of 'survival of the fittest'. The organism that is best adapted to its environment will be 'selected' by nature to survive and thus, pass forward its genes to the future generation.The scenario when there is no genetic variation present there will be no natural selection as there will be no 'fittest' organism. Moreover, the absence of reproductive barriers is bound to allow gene flow between two populations. Natural selection occurs when the conditions are not ideal and genetic variations are present.Thus, it will occur in a geographical area with limited food. Hence, the correct answer is option C.
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How are these three genes related
Why do we use microscopes to study cells?
Answer:
Explanation:
Because most cells are too small to be seen by the naked eye, the study of cells has depended heavily on the use of microscopes. .
Answer:
We use microscopes to study cells because most cells and cell organelles cannot be seen with the naked eye.
Explanation:
Which of the following is the type carrier protein that transports one type of molecule (such as
glucose) through the plasma membrane?
O uniporter
O ionporter
O antiporter
symporter
2. How does mimicry differ from camouflage?
Answer:
mimicry is copy camouflage is something already has
Explanation:
After the completion of meiosis II, how many copies of gene A does each of the daughter cells contain?
Answer:
1
Explanation:
During meiosis, a diploid cell ultimately forms four haploid gametes that go on to take part in fertilization. Because they are haploid. that means they have one copy of all of the chromosomes and the genes contained within them.
First, the DNA is replicated, and then two cell divisions take place form the haploid gametes. So at first, there are two copies of each gene, creating four after the DNA is replicated.
After the first cell division (meiosis I) there are two cells with 2 copies of every gene. Then to form the haploid gamete, there is another cell division (meiosis II) creating 4 cells each containing one copy of every gene
In the diagram below, what part of the excretory system is labeled B?
A-
A. Kidney
OB. Ureter
OC. Urethra
OD. Bladder
B.
D
Option(B) Ureter is the correct option.
The ureter is a vital part of the urinary system in humans. It is a muscular tube that connects the kidneys to the urinary bladder. Each human has two ureters, one attached to each kidney, and they play a crucial role in the transportation of urine from the kidneys to the bladder.
The primary function of the ureter is to carry urine that is produced in the kidneys to the urinary bladder for storage before it is eliminated from the body through urination. The ureters accomplish this by using peristalsis, a wave-like muscular contraction, to propel urine along their length.
The ureters have a complex anatomical course. They originate from the renal pelvis, which is the funnel-shaped structure that collects urine from the kidneys. From there, they extend downward, crossing over the brim of the pelvis and passing behind the peritoneum, the membrane lining the abdominal cavity.
The efficient functioning of the ureters is essential for the proper elimination of waste products and maintenance of fluid balance in the body. Any obstruction or abnormality in the ureters can lead to conditions like kidney stones, urinary tract infections, or urinary reflux.
In summary, the ureters are muscular tubes that transport urine from the kidneys to the urinary bladder. They rely on peristaltic contractions to propel urine, and their structure and positioning help ensure unidirectional flow.
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A cell is placed in a beaker of solution. After the cell is placed into the beaker, students observe that it increases in size. Which statement best explains the process being modeled by the cell?
A.
The processes needed for the cell to communicate with other cells.
B.
The processes needed for the cell to take in nutrients.
C.
The processes needed for the cell to move.
D.
The processes needed for the cell to reproduce.
Answer:
The best answer would be A
Explanation:
Glad I could help you!
Each replaced cell ______
the original cell.
Answer:
Mitosis
Explanation: Mitosis is a method of cell division in which a cell divides and produces identical copies of itself. The primary mechanism by which organisms generate new cells is through cell division. During this process, a single "parent" cell will divide and produce identical "daughter" cells.
Happy halloween. MORE POINTS. AND BRAINLIEST. FOR ALL OF YOU
Answer:
halloween!! yayayayya
Explanation:
Answer:
henlo.
Explanation:
i am Mr.doge the meme
Are these answers correct?
Answer:
yes it is correct. the water potential and solute are both correct
Answer:
yes, those are correct:)
Explanation:
hope this helps:))
Which of the following is not found in DNA?
a
Carbon
IN
b
Phosphate
с
Nitrogen
d
Sulfur
Answer:
your answer is d
Explanation:
i took the test
how many chromosomes would you have after DNA replication
Answer: Chromosomes are coiled structures made of DNA and proteins. Chromosomes form after DNA replicates; prior to replication, DNA exists as chromatin. Chromosomes contain genes, which code for proteins. Human cells normally have 46 chromosomes, made up of two sets of chromosomes, one set inherited from each parent.
Explanation:
Why didn’t Robert Hooke recognize that cells are alige
You conduct an experiment to see how different colors of light affect the growth of sunflowers. At the end of each week, you measure the height of each flower and record the data in your journal.
What is the independent variable in the above example?
Answer:
hi shelbi
Explanation:
Since plants are naturally green thanks to the pigment chlorophyll, green light has the least impact on them. Additionally, changing colored light aids plants in achieving various objectives.
What elements make up an experiment's independent variables?
The variable you alter, regulate, or change in an experimental study to examine its effects is known as an independent variable.
It is named "independent" because it is unaffected by any other study variables. Other names for independent variables include: Explaining factors
For instance, blue light promotes the growth of vegetative leaves. Plants can blossom when red and blue light are present together.
The independent variable (height) influences the dependent variable (height).
Therefore, performing an experiment, the independent variable refers to the thing you change, and the dependent variable refers to the thing that changes as a result of that change.
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How are the light reactions of photosynthesis important to the production of glucose?
pls help
Answer:
Because light reaction provide the chemical energy in the form of ATP and NADPH.
During the light-dependent reaction, it takes energy from the sun and converts it into chemical energy. This chemical energy is ATP and NADPH.
This is known as the first stage of photosynthesis. The light-independent reactions will then use the ATP and NADPH from the light-dependent reactions and essentially make glucose. This is also known as the Calvin cycle.
The Calvin cycle will use the enzymes and create sugar, or glucose, from the carbon dioxide. This can be put into three steps, fixation, reduction, and regeneration.
The diagram below illustrates a cellular process.
Cell membrane
Cytoplasm
Which of the following best explains the process illustrated in the above diagram?
A Passage of water molecules through a semi-permeable membrane to equalize concentration
B.
Transport of molecules across a membrane from a high to low concentration gradient by means of a carrier protein
Movement of molecules against a concentration gradient expending energy
D.
Separation of suspended particles from a fluid environment to a non-fluid environment through a porous membrane
Answer:
B. Transport of molecules across a membrane from a high to low concentration gradient by means of a carrier protein
Explanation:
According to this diagram showing the presence of certain molecules on one side of the membrane, making their way to the other side across the membrane. Due to the difference in concentration on either side of the membrane, a concentration gradient is formed.
Based on the diagram, the movement or transport of molecules is occurring from a region of high concentration to a region of low concentration. This means that it's a form of PASSIVE TRANSPORT, however, the molecules are being transported across via the aid of CARRIER PROTEINS as depicted in the image.
How did we end up with 8.7 million species?
What is the largest bone in the human body?
Answer:
femur
Explanation:
the upper leg bone that connects to the socket in your hip
Explain why the roots of a plant grow in all directions if there is no gravity
Answer:
the reason why roots grow in all directions is because they need to be strong and hold the tree up in all directions.
Explanation:
trees need to be really stable and a really wide base makes it very hard to push it over and also trees can access more water if they have a bigger net of roots so if you have a tree near a stream you will realize that they have a lot of roots headed for the stream.
help me pleaseeeeeeeee
Answer:
múltiple allele because the offspring have alleles from both parents
Explanation:
is the C).
This diagram is an example of which global cycle?
phosphate cycle
carbon cycle
water cycle
nitrogen cycle
The correct answer is Water cycle
Explanation:
The diagram presented shows how water, water vapor and even ice/snow flow from one system of the Earth to another. In this, there are included processes such as evaporation that implies water from water bodies turning into water vapor and going to the atmosphere; transpiration that involves the evaporation from the plants, and precipitation as rain, snow, or similar occur and water returns to the surface of Earth. According to this, the cycle depicted is the water cycle.
The state of matter of a material depends on its _____
A) density
B) tempature
C) volume
D) weight
The state of matter of a material depends on its temperature. Therefore, option B is correct.
What is the state of matter?One of the several configurations in which matter can exist is a state of matter. Solids, liquids, gases, ionized plasma, quark-gluon plasma, bose-einstein condensate, and fermionic condensate are the seven states of matter.
Particles in a solid, liquid, or gas move more quickly because their kinetic energy increases as their temperature rises. The particles slow down as the temperature drops. When a liquid is sufficiently cooled, it turns into a solid. A gas is created when a liquid is sufficiently heated. The most affected state of matter is gas.
This is how the state of matter of a material depends on its temperature. Therefore, option B is correct.
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When did Jean Baptiste Lamarck states that all species on Earth are descendants of other less complex species?
Answer:
1744-1829 is when she said that
Is precipitation abiotic or biotic
Answer:
abiotic
Explanation:
Biotic- Living things
Abiotic- Nonliving things
Precipitation- Rain, snow, sleet, hail, etc.
Rain, snow, sleet, hail are not living things or biotic because they dont move, or do anythings that humans or plants or animals do. Instead, they are abiotic or nonliving things!
Mendel’s law of segregation states that
Answer:
The principles that govern heredity were discovered by a monk named Gregor Mendel in the 1860s. One of these principles, now called Mendel's Law of Segregation, states that allele pairs separate or segregate during gamete formation and randomly unite at fertilization.
Explanation:
