Zuzu Is a White Cat

Multiple Choice

Zuzu is a white cat.She is genotype Ww for the "white masking gene" that reduces the number of melanocytes (pigment-containing cells) .As a result,her body makes pigment,but it cannot get into the cells where it would color the fur.Zuzu's white masking gene is _____ to the melanin pigment gene because it prevents full expression of the pigment.

A) recessive
B) pleiotropic
C) epistatic
D) dominant