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Below is a map of the Drosophila melanogaster X chromosome, giving the distances between adjacent genes...

Below is a map of the Drosophila melanogaster X chromosome, giving the distances between adjacent genes in cM.

Below is a map of the Drosophila melan

Suppose that a female is heterozygous for an inversion of the exact entire region from v to wy.

She is also heterozygous for all the genes shown in the map, and is test-crossed.

What percentage of her progeny will be recombinants between the following gene pairs?

a) wy and g ___________

b) v and g _____________

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Answer #1

Based on the given data, the genotype of female is: Sn+Sn,Lz+Lz,v+v,wy+wy,m+m,w+w,g+g and it is test crossed with complete recessive individual SnSn,LzLz,vv,wywy,mm,ss,gg. Thus, the percentage of her progeny will be recombinants between the following gene pairs is as follows:

a) wy and g: 8.3

b) v and g: 11.4

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