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solong [7]
3 years ago
10

Cells require a structure that regulates the transfer of material in and out of the cell. This structure is the –

Biology
1 answer:
FromTheMoon [43]3 years ago
3 0
Cells require a structure that regulates the transfer of material in and out of the cell. This structure is the –

Cell membrane.
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Explanation:

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The key to the evolution of altruism is that a. recipients have to be more likely to carry the altruistic allele than nonrecipie
cupoosta [38]

Answer:

The correct answer is b. actors have to be more likely to carry the altruistic allele than non actors.

Explanation:

Altruism is the behavior by an organism that benefits other organisms by costing its own fitness. The actor is the individual who is doing altruism and the recipient is the individual who is getting benefited by the actor's altruism.

An example of altruistic behavior can be seen in animal kingdom easily. Vampire bats give blood to those members of the community who were not able to go for search for blood show altruistic behavior.

Actors have altruistic genes that suggest them to behave altruistically. Non-actors may not contain alleles of altruism but the recipient might have altruistic alleles.

Hamilton's rule says that natural selection will favor the altruistic allele when rb > c.

where r = coefficient of relatedness between donor and recipient

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          c = cost paid by altruist.

Therefore, the correct answer is b.

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The model appears to show the carbon dioxide molecules entering the blood cell and the oxygen molecules existing the cell.

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