The reason for the darker fur on the tail, ears, nose, and legs of a Siamese cat is?

a. incomplete dominance.





b. the interaction of the environment with gene expression.





c. quantitative inheritance.





d. epistasis.





e. none of these

The reason for the darker fur on the tail, ears, nose, and legs of a Siamese cat is?
b


pigment production is temperature-sensitive and occurs most in the coolest areas, at the tips.
Reply:b. The gene that produces the dark pigment is temperature sensitive. The paws and end of the tail are just a little bit cooler so the dark pigment can be made, In the rest of the body the temperature is too high and the pigment biosynthesis is blocked.