In fruit flies, one genotype for red eyes is written XRXR. The R stands for the dominant allele for red eyes. What does the X stand for? the recessive allele for white eyes the female chromosome the codominant allele for pink eyes the male chromosome

Question

Biology

Cedric Rich

16 July, 02:42

In fruit flies, one genotype for red eyes is written XRXR. The R stands for the dominant allele for red eyes. What does the X stand for? the recessive allele for white eyes the female chromosome the codominant allele for pink eyes the male chromosome

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Answers (1)

Know the Answer?

Martha Santiago · Answer 1

The correct answer is : the female chromosome

Explanation:

According to the question, it is mentioned that R is a dominant allele, responsible for the red eyes. RR is a genotype for Red eyes. A fruitfly has a diploid genotype which means each trait is represented by a pair of chromosomes. In the above question, the dominant red eye colour trait is represented by the pair of chromosomes RR. Therefore, XX must represent another trait. By convention, a pair of X chromosomes (XX) represent a female and a combination of X and Y chromosomes (XY) represents a male. Given XX genotype represent a female fruitfly chromosome.