A CHROMOSOMAL ANALYSIS OF X-RAY INDUCED GENETIC VARIANCE OF WING LENGTH INDROSOPHILA MELANOGASTER

Abstract

A chromosomal analysis of genetic variation in wing length of Drosophila melanogaster was done using an isogenic line and a single derived irradiated line which differed significantly in wing length. Partitioning of the variance indicates no difference between X-ray induced genetic variance and that from other sources. Furthermore, the amount of additive variance is strongly dependent on chromosome frequency, and sex differences are present in all components.