A pure-breeding female fruit fly with a yellow body is crossed to a pure-breeding male fruit fly with a gray body. All female offspring from the cross have gray bodies and all males have yellow bodies. Body color is likely a(n)__________trait, and the gray allele is ________.
A. Autosomal; dominant
B. Autosomal; recessive
C. X-linked; dominant
D. X-linked; recessive
Answer:C
A pure-breeding female fruit fly with a yellow body is crossed to a pure-breeding male fruit fly with a gray body. All female offspring from the cross have gray bodies and all males have yellow bodies. Body color is likely a(n)__________trait, and the gray allele is ________.
A. Autosomal; dominant B. Autosomal; recessive C. X-linked; dominant D. X-linked; recessive