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. 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?
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. 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?

User Bhanu Sharma
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Answer:

the male chromosome

Step-by-step explanation:

User Kevin Nielsen
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The X can possibly be the sex chromosome. Like for human female we have the XX chromosomes and when the allele is on the X chromosome we write as X with a R as the superscript on top right.
User Etherous
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