111
-Wild-type Drosophila females were mated to males homozygous for two autosomal mutations-vestigial (vg),which produces short wings,and black (b),which produces a black body.All the F? flies had long wings and gray bodies; thus,the wild-type alleles (vg? and b?)are dominant.The F? females were then testcrossed to vestigial,black males,and the F? progeny were sorted by phenotype and counted.Simple analysis indicates that,on average,18 out of 100 chromosomes recovered from meiosis had a crossover between vg and b.Thus,vg and b are how far apart?

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The Answer of 111
-Wild-type Drosophila females were mated to males homozygous for two autosomal mutations-vestigial (vg),which produces short wings,and black (b),which produces a black body.All the F? flies had long wings and gray bodies; thus,the wild-type alleles (vg? and b?)are dominant.The F? females were then testcrossed to vestigial,black males,and the F? progeny were sorted by phenotype and counted.Simple analysis indicates that,on average,18 out of 100 chromosomes recovered from meiosis had a crossover between vg and b.Thus,vg and b are how far apart?

111 -Wild-Type Drosophila Females Were Mated to Males Homozygous for Two