Question

In fruit flies, one genotype for red eyes is written X R X R . The R stands for the dominant allele for red eyes. What does the X stand for?

Answer 1

Explanation:

• The eye colours of the drosophilia or the fruit flies are the important genetic characteristics that help in determining the sexual traits and perform several experiments of the fruit fly.  
• Drosophilia is also called the queen of genetics.
• The alleles of the drosophilia eye colour genetics contain two characters, red one is represented by R which is the dominant one, whereas the recessive one is the white which is represented by X.

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