Genes a and B Are Located Close Together in the Same

question 50

Multiple Choice

Genes a and b are located close together in the same chromosome. Allele A for long wings is completely dominant to allele a for short wings. Allele B for light body color is completely dominant to allele b for dark body color. A female fly is heterozygous for both genes such that alleles A and b are present in one homolog, whereas alleles a and B are present in the other homolog. If she is crossed with a male fly that is homozygous recessive for both genes, then the majority of their progeny would:

• A)have long wings and a light body or short wings and a dark body.
• B)have long wings and a light body or long wings and a dark body.
• C)have short wings and a light body or long wings and a dark body.
• D)have short wings and a light body or long wings and a light body.
• E)look just like their mother.

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