In an individual who is heterozygous for a certain trait,the dominant allele gives Huntington's disease.What is the masked,recessive trait in this individual?
A)Normal vision
B)Normal digits
C)Normal nervous system
D)Polydactyly
E)Straight thumb

Question

Quizplus · Accepted Answer

Since the individual is heterozygous for Huntington's disease, which is caused by the dominant allele, the masked, recessive trait must be present in the individual's genotype but not expressed phenotypically. Among the given choices, the only trait that is not related to the same system or body part as Huntington's disease is the nervous system. Therefore, the masked, recessive trait in this individual is having a normal nervous system.

In an Individual Who Is Heterozygous for a Certain Trait,the