Suppose that in fruit flies, eye color, wing shape, and body color are each code

Question

Suppose that in fruit flies, eye color, wing shape, and body color are each coded by genes with two alleles Two heterozygous fruit flies are crossed, and the offspring have the following phenotypes 27 have red eyes, straight wings, and brown bodies 9 have red eyes, curled wings, and brown bodies; 9 have red eyes, straight wings, and yellow bodies 9 have white eyes, straight wings, and brown bodies; 3 have red eyes, curled wings, and yellow bodies; 3 have white eyes, straight wings, and yellow bodies; 3 have white eyes, curled wings, and brown bodies; and 1 has white eyes, curled wings, and a yellow body ldentify the dominant allele for each trait. Dominant allele brown body red eyes curled wings straight wings white eyes yellow body Eye color Wing shape Body color

Explanation / Answer

Ans - Its a 8*8 punnett square. see the last entry which has white eyes, curled wings and a yellow body, all will be recessive. You can also construct a 8 by 8 punnett square of RrSsBb × RrSsBb

1. red eyes

2.straight wings

3. Brown bodies

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