Gene C controls fur pigmentation in Himalayan rabbits, which are pictured below. The rabbit on the left has pigmentation on its ears, nose, and feet, where it loses most of its body heat. The rabbit on the right has no fur pigmentation.
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What is the best explanation for this difference in pigmentation?
a
The genes for dark fur color and light fur color are located on different chromosomes.
b
The type of genes present in the rabbits are related to the surrounding environment.
c
Higher temperatures cause genes to mutate during development.
d
Environment affects the expression of the genes for that trait.