1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marta_Voda [28]
3 years ago
11

How does the recesive sickle-cell allele stay in the gene pool

Biology
1 answer:
Zina [86]3 years ago
7 0

Answer:

Because natural selection selects for it. Thus it persists.

Explanation:

You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.

You might be interested in
which of these describes one or more living organism that depends on another living organism to survive?​
Kay [80]

Answer:

Bacteria living in the mouth of a horse

Explanation:

3 0
4 years ago
What is the difference in evevation between two successive index contours on a map with a contour on a map a contour interval of
Volgvan

Answer: On topographic maps, elevation is shown by using contour lines. The difference in elevation between one contour line and the next is called the contour interval. The contour interval is selected based on the relief of the area being mapped. Every fifth contour line is darker than the four lines one either side of it.

Explanation:

4 0
4 years ago
Does anyone know this ?
Svet_ta [14]

he said the seven year olds had been a big part in a coma and had made the effort for a bruse and I was not going

5 0
3 years ago
Diuretic drugs ________. keep sodium and potassium from being reabsorbed from the tubules back into the blood allow sodium and p
tensa zangetsu [6.8K]

Answer:

keep sodium and potassium from being reabsorbed from the tubules back into the blood

Explanation:

Diuretic drugs are the approved drugs which increase the diuresis or the amount of urine. The physiology of more production of urine depends upon the absorption of sodium and potassium ions.

The diuretic drugs act on the transporters present in the membrane of the nephron structures especially in the distal and the collecting tubule.

The drugs inhibit these transporters which allow the sodium and potassium ions to be reabsorbed from the unfiltered solution as a result of which the concentration increases in the urine and the water move out down the concentration gradient. Thus more sodium ions, therefore, more urine is produced.

Thus, the selected option is the correct answer.

7 0
3 years ago
Read 2 more answers
Help please!!! The answer doesn’t need to be long.
inna [77]

Answer:

The correct answer is - due to unicellular structure and some characteristics similar to both plants and animals.

Explanation:

Euglena is classified as the protoctists and they perform photosynthesis with the same basic process that plants use but they are able to move around and eat like animals too.

They are not classified as plants or animals as they are unicellular which means they are composed of only one cell, In order to be classified as a plant or animal, an organism has made of more than one cell.

Due to its unicellular body and characteristics similar to both plants and animals they are called protists.

8 0
3 years ago
Other questions:
  • 1. How is the process of photosynthesis central to sustaining life on Earth?
    8·1 answer
  • Norepinephrine and dopamine are examples of transmitters whose synaptic activity is terminated by'
    5·1 answer
  • “Water covers 75 percent of Earth. 97 percent of water on Earth is salt water. Only 3 percent of water is available as fresh wat
    14·2 answers
  • Plant spores are usually
    12·1 answer
  • A plant with the genotype TT is called _____.<br><br> homozygous<br> heterozygous<br> hybrid
    14·2 answers
  • Is it possible for a son to inherit an X chromosome from his father? Explain why or why not.
    15·2 answers
  • In which part of the food chain is each of the algae?
    11·1 answer
  • What kind(s) of cells can develop from multipotent stem cells?
    6·1 answer
  • What is the function of the nervous system? What is the
    13·1 answer
  • In 1665, robert hooke examined a thin slice of cork using a simple microscope. Hooke observed tiny box-like cavities that were e
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!