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Sedbober [7]
3 years ago
15

Which be at illustrates a result of natural selection

Biology
1 answer:
JulijaS [17]3 years ago
4 0

Answer:

Sickle cell anemia

Explanation:

sickle cell anemia is a disease in which red blood cell haemoglobin A is replaced by an abnormal form called hemoglobin S. The result is deformation of red blood cells at low oxygen concentrations leading to anemia. Sickle cell trait is fairly common in some parts of Africa and Asia but rare in other continents. This high incidence of the trait in some areas suggests that it may have some survival value. The trait occurs with high prevalence in areas where malaria is endemic. People with the trait have a higher resistance to malaria than normal individuals.

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Explain what occurs during the process of each type of artificial selection technique. Cloning, Artificial Insemination, In vitr
jolli1 [7]
The process of cloning effectively involves taking a cell from your body and turning it back into an embryo. The embryo would then either develop into a human being as has been proposed by various scientists around the world and which is currently banned, or it would be turned into a stem cell.
5 0
3 years ago
Which of the following is NOT a function of hormones?
sammy [17]
<h2>Answer:</h2>

I believe the correct answer is D. React to stimuli from outside the body.

<h2>Explanation:</h2>

Hormones are types of proteins that produce responses hand in hand with neurons but they are much slower and longer lasting. They can act on the same cells and in that instance they will be called autocrine hormones. Those that act on neighbouring cells are called paracrine hormones while those that act on far away cells are called endocrine hormones.

<h2>Further Explanation:</h2><h3>a. Initiate behavior and reproduction:</h3>

This is a function of hormone(s). Hormones such as testosterone can initiate both behavior of an organism and also stimulate reproduction. Testosterone causes maturation of sex features and sperms in males to initiate reproduction. Other hormones with such functions include: Estrogen and adrenaline.

<h3>b. Coordinate the production and use of energy:</h3>

Some hormones conduct this function by regulation metabolism in the body. These include: Insulin in intake of glucose for energy and glucagon in maintaining blood glucose levels. Corticosterone also responds in stress to maintain energy.

<h3>c. Maintain nutrition and metabolism:</h3>

Nutrition can be maintained by hormones such as ghrelin that stimulates appetite, insulin in intake of glucose, leptin and glucagon.

<h3>d. React to stimuli from outside the body</h3>

This is not a function of a hormone but rather the function of a neuron. Neurons have specific structures called denrites that recieve signals/stimuli from outside the body then convert them to nerve impulses that are transmitted to the brain which produces another impulse to be taken to a specific site to produce a desired response.

Level: High Schoo;

5 0
3 years ago
Which is the best description of a temperate climate zone?
Hunter-Best [27]
The answer is C it’s the most normal climate
7 0
3 years ago
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exis [7]

Answer:

Despite a generally high security standard, <u>accidents can still happen.</u> It is technically impossible to build a plant with 100% security. A small probability of failure will always last. The consequences of an <u>accident would be absolutely devastating both for human being as for the nature.</u>

Nuclear power plants as well as nuclear waste could be<u> preferred targets for terrorist attacks. </u>No atomic energy plant in the world could withstand an attack. Such a terrorist act would have <u>catastrophic effects for the whole world.</u>

4 0
4 years ago
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Tectonics plates float on the ? <br> A.outer core<br> B.inner core<br> C.mantle<br> D.lithosphere
nika2105 [10]

Answer:

I think mantle

Explanation:

5 0
3 years ago
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