In a mapping cross, you determine that the recombination frequency between:
Loci Q and P is 12%
Loci Q and L is 15%.
If locus Q is in between loci P and L, then the recombination frequency between P and L should be approximately:
A)3%
B)27%
C)50%
D)75%

Question

Quizplus · Accepted Answer

Since locus Q is in between P and L, the recombination frequency between P and L can be estimated by subtracting the recombination frequency between Q and P from the recombination frequency between Q and L: 
15% - 12% = 3%. 
Therefore, the best choice is B (3% is closest to the calculated value).

In a Mapping Cross, You Determine That the Recombination Frequency