Recombination fractions are additive. 6 genes are on a genetic map , with the additive map distance being 0.08+0.07+0.07+0.07+0.06=0.35. But if a test cross is done between the start and finish, and only gives 0.23, why?
Double recombinants- if recombination fraction is 0.35, the proportion of double recombinant is 0.35x0.35=0.12. 0.35-0.12=0.23 (phenotypically we cannot detect double recombinants).
Comments
No comments have yet been made