Suppose You Discovered a New Mutation in Mice That Causes

Multiple Choice

Suppose you discovered a new mutation in mice that causes a curved spine.You noticed that this mutation is seen only in females.When curved-spine females are crossed with normal males, the progeny are always recovered in the ratio: 1/3 curved-spine females, 1/3 normal females, 1/3 normal males.Explain the genetic basis for this ratio.

A) Lethal autosomal allele
B) Lethal sex-linked allele
C) Recessive sex-linked allele
D) Recessive autosomal allele
E) Dominant sex-linked allele