-In a Drosophila Experiment,a Cross Was Made Between Homozygous Wild-Type

Multiple Choice

-In a Drosophila experiment,a cross was made between homozygous wild-type females and yellow-bodied males.All of the resulting F₁s were phenotypically wild type.However,adult flies of the F₂ generation (resulting from matings of the F₁s) had the characteristics shown in the figure above.Consider the following questions:
(a) Is the mutant allele for yellow body recessive or dominant?
(b) Is the yellow locus autosomal or X-linked?

A) (a) recessive; (b) X-linked
B) (a) recessive; (b) autosomal
C) (a) dominant; (b) X-linked
D) (a) dominant; (b) autosomal
E) (a) co-dominant; (b) X-linked