Question

During the warm temperatures of summer, the arctic fox produces enzymes that cause its fur to become reddish-brown. During the cold temperatures of winter, these enzymes do not function. As a result, the fox has a white coat that blends into the snowy background. What explains this change in color?
the genes of a fox are made of unstable DNA
mutations can be caused by temperature extremes
random alteration of DNA can occur on certain chromosomes
the expression of certain genes is affected by temperature

Answer 1

Answer: the expression of certain genes is affected by temperature

Explanation:

For organisms to survive changing environmental conditions, a lot of molecular processes occur in the genes.

For the arctic fox, enzymes coded by specific genes are periodically "switched on or off" depending on the temperature.

Thus, the change in colour can be EXPLAINED by the expression of certain genes affected by temperature