Linked gene questions

[bottlecap1990]

Ok I don't even know where to begin with this problem

 

A hairy-winged (h) Drosophila female is mated with a yellow bodied (y), white-eyed (w) male.

The F1 flies are normal. The F1 progeny is then inter-bred. The F2 generation has the following

phenotypic ratios-

 

 

 

 

give the genotypes of its parents and the F1 (for each sex). List linkage relationship and calculate map distances.

 

 

Can someone lead me through this?

[Phi for All]

!

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