Wing shape (A/a) and body color (B/b) in Drosophila are controlled by two independently assorting gene pairs. Flies with curved wings and gray body were crossed with each other and produced the following offspring: 36 curved wings, gray body 12 curved wings, black body 18 straight wings, gray body 6 straight wings, black body Questions: 1. What is the genotype of the parent flies?
Wing shape (A/a) and body color (B/b) in Drosophila are controlled by two independently assorting gene pairs. Flies with curved wings and gray body were crossed with each other and produced the following offspring:
36 curved wings, gray body
12 curved wings, black body
18 straight wings, gray body
6 straight wings, black body
Questions:
1. What is the genotype of the parent flies?
2. Describe the interactions that will explain the observed phenotypic ratio. Indicate the
3. What are the genotypes of the offspring in each phenotypic class?
a) curved wings, gray body
b) curved wings, black body
c) straight wings, gray body
d) straight wings, black body
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