Normal fruit flies have brownish-yellow bodies, and this body color is dominant. a mutation in the gene for body color can produce flies with an ebony body color. a homozygous normal fruit fly (e+e+) is crossed with a homozygous ebony fruit fly (ee). what is the predicted outcome of this genetic cross? a of the offspring, 75% will have brownish-yellow bodies, and 25% will have ebony bodies. b all the offspring will have brownish-yellow bodies. c of the offspring, 75% will have ebony bodies, and 25% will have brownish-yellow bodies. d all the offspring will have ebony bodies.

D: All the offspring will have brownish-yellow bodies

Explanation:

As mentioned in the question, Normal fruit flies have brownish-yellow bodies, and this body color is dominant. A mutation in the gene for body color can produce flies with an ebony body color. Here we are asked that, A homozygous normal fruit fly (e+e+) is crossed with a homozygous ebony fruit fly (ee). What is the predicted outcome of this genetic cross.

Lets cross a normal fruit fly (e+e+)  with a homozygous ebony fruit fly (ee)

P1:                                      e+e+     X      ee

Gametes:                         e+: e+:    e:    e

Offspring:                         e+ e:  e+ e: e e+ :e e+

Since,  brownish-yellow bodies color is dominant, and all the offspring have genotype  e+ e, this means that All the offspring will have brownish-yellow bodies.

Hope it helps!

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