The Influence of the Y-Chromosome on X-ray Induced Mutation Rate in Drosophila melanogaster

EFFECT OF THE ABSENCE OF THE Y CHROMOSOME ON THE EXPRESSION OF THE CUBITUS INTERRUPTUS PHENOTYPE IN VARIOUS TRANSLOCATIONS IN DROSOPHILA MELANOGASTER

“…Reports have been published according to which changing the dosage of heterochromatin in the nucleus modifies the expression of many other genetic mechanisms: expression of certain quantitative characters (MATHER 1941), size of cells and ommatidia ( BARIGOZZI 195 1 ) frequency of crossing over ( SCHULTZ and RED-FIELD 195 1 ), chromosome conjugation ( GERSCH 1959), expression of podoptera phenotype (GOLDSCHMIDT 1955), mutation frequency in males (KERSCHNER 1949).…”