What are the mechanisms of gene regulation?

Gene regulation ensures that the appropriate genes are expressed at the proper times. Gene regulation can also help an organism respond to its environment. Gene regulation is accomplished by a variety of mechanisms including chemically modifying genes and using regulatory proteins to turn genes on or off.

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most likely to see nocturnal animals

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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