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In a group of fruit flies, some individuals have a gray body and others have a black body. Inthis group, the gene for the body color trait has two alleles. The allele B is for a gray body,and the alleleb is for a black body,A certain fruit fly is from this group. This fruit fly's phenotype for the body color trait is ablack body. This fly's genotype for the body color gene is bb.Based on this information, complete the following statement.This fruit fly isfor the body color gene.homozygousheterozygous



Answer :

Considering a group of fruit flies.

The trait of interest is the color of the body of the fruit flies.

There are two observable phenotypes:

- Gray body.

- Black body.

This trait is coded by two alleles:

- B codes for the "gray body"

- b codes for the "black body"

A certain fruit fly shows the phenotype "black body" and its genotype is "bb"

→ both alleles of the genotype of the fruit fly are equal, which means that this individual is homozygous for the given trait.

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