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In fruit flies, a grey body is dominant to a black body, and normal wings are...

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Biology

In fruit flies, a grey body is dominant to a black body, andnormal wings are dominant to vestigial wings. Flies areheterozygous for both grey bodies and normal wings were crossedwith flies that had black bodies and vestigial wings. The followingresults were obtained:

PhenotypeNumber of flies
Grey body/Normal wings482
Black body/Vestigial wings472
Grey body/Vestigial wings103
Black body/Normal wings92

The results indicate that the genes for wings and body color areon the same chromosome. The recombinant offspring are a result ofcrossing over.

How many map units (expressed as a percentage to thenearest whole number) apart are the two genes?

Answer & Explanation Solved by verified expert
4.5 Ratings (706 Votes)
According to the question Grey body color g is dominant over recessive black body g and normal wings vg is dominant over vestigial wings vg Flies that are heterozygous for both alleles gg vgvg were crossed with black body and vestigial wings gg vgvg The cross can be represented as follows gg vgvg X gg vgvg Gametes g vg g vg g vg g vg g vg    See Answer
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