Verified Answer :

taskmasters

The answer is letter C. |

Slight differences in the color of feathers in
birds are the result of mutations. Mutation is process that occurs through a
long period of time. It is a process in which the genes’ structures changes
thus altering the physical characteristics and behaviors of species. This
results into variant forms that may be transmitted to the next generations of
species. Mutation is caused by an alteration of single base units in DNA, or
the deletion, insertion, or rearrangement of larger sections of the genes or
chromosomes. 

mrsstravers112

Answer:

actually the answer is variations

Explanation:

mutations are what makes a organism better for the environment which a feather of a bird does not do

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