Effect of Selection on Crossing over in the Males of Drosophila ananassae

Abstract

Selection was made from the extremes of recombination values between 2 autosomal markers in Drosophila ananassae males, where cross over values ranged from 0% to 25%. Two lines were established after 6 to 8 generations of selection, the low, cross over line showing 0 to 5% recombination and the high cross over line showing 8 to 14.4% recombination, with means of 1.5% and 12% respectively. The selection experiment was more successful in the low cross over lines than in the ones whose recombination values approached the 25% cross over level.