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amid [387]
3 years ago
13

Which gases are carried by red blood cells? Select two options.

Biology
2 answers:
Gnoma [55]3 years ago
6 0

Answer:

oxygen and carbon dioxide

Nat2105 [25]3 years ago
6 0

Answer:

I agree with him(or her), its oxygen and CO2 (carbon dioxide)

Explanation:

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

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Which best defines a diploid cell during meiosis?
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