THE TWO-LOCUS MODEL WITH SEX DIFFERENCES IN RECOMBINATION

1 School of Biology, University of Sussex, Sussex, England

The criteria for stability of the equilibrium with D=0 are obtained for the two locus model with multiplicative or symmetric fitnesses when the recombination values in males and females are different. It is shown that if r is defined to be equal to the average of the recombination values in males and females, then the criteria are exactly the same as in the standard two locus model.—The equilibrium values with Dne0 are obtained for the symmetric fitness model. At this equilibrium, the absolute value of D is always greater (for the same average recombination value) if the recombination values in males and females differ than if they are equal.

Submitted on August 10, 1973
Revised on February 4, 1974