Question

Question 1:
In a cross between wild type female Drosophilia flies (normal wing, grey body Vgvg Ebeb) and male flies with vestigal wings and ebony bodies (vgvgebeb), the offspring were: VgvgEbeb= 585, vgvgebeb= 466, vgvgEbeb= 104, Vgvgebeb=113


(a) State the phenotypes of each genotype:_______________________________...

(b) Calculate the crossover frequency (value):________________________________...

Answer 1

a) Whichever phenotype is present in the fly with all recessive alleles, those are the phenotypes associated with the recessive alleles. (So in this case, the male has all recessive alleles)
b) Divide the number of recombinants by the total number of offspring and multiply by 100