MEIOTIC DRIVE IN NATURAL POPULATIONS OF DROSOPHILA MELANOGASTER. I. THE CYTOGENETIC BASIS OF SEGREGATION-DISTORTION

Abstract

EIOTIC drive has been defined as a force, potentially capable of altering M gene frequencies in natural populations, which somehow depends upon the nature of the meiotic divisions; specifically, when the meiotic divisions are such that the two kinds of gametes from a heterozygote are produced in a ratio different from 1 : 1 ( SANDLER and NOVITSKI 195 7).There have been reported numerous cases which either are, or may be, examples of meiotic drive.These include cases in Drosophila (