Siamese cats have dark fur on their extremities (paws,nose,ears,and the tail),while the rest of their bodies are covered with lighter hair,despite the fact that only one gene controls their coat color.Why does the coat color differ at different places on a Siamese cat's body?
A) Melanin can be produced in the extremities because they are colder than the rest of the body.
B) Melanin can be produced in the extremities because they are warmer than the rest of the body.
C) Tyrosinase, which is needed for pigment formation, does not function in the colder extremities.
D) Tyrosinase, which is needed for pigment formation, does not function in the warmer extremities.

Question

Quizplus · Accepted Answer

The enzyme tyrosinase, which is necessary for melanin production, is temperature-sensitive and functions better in the cooler extremities, leading to darker fur in those areas.

Siamese Cats Have Dark Fur on Their Extremities (Paws,nose,ears,and the Tail),while