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In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. If a red-eyed homozygous fly (RR) and a red-eyed heterozygous fly (Rr) mate together, what are the possible genotypes of their offspring? (Hint: You many want to complete a Punnett square.)

RR and rr
Rr only
Rr and RR < I think its this one
RR, Rr, and rr

Respuesta :

TrinityNoelle
you are correct, it would be RR and Rr
Ver imagen TrinityNoelle

Answer:

Yes the answer you expected is correct. Its RR and Rr.

Explanation:

As per the given information the parent generation is as follows:

Parent: Red eyed homozygous fly (RR)   x  red eyed heterozygous fly (Rr)

Gametes: R and R , r

F1 generation : RR and Rr

The F1 generation will have only these two possible genotypes.

Ver imagen JuliettaGlassford

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