title: Heterozygous effects of x-ray induced mutations on viability of Drosophila melanogaster.
abstract: Drosophila second chromosomes that had received 1000 R of X-irradiation mainly in the mature sperm stage were tested for heterozygous effects on viability. When the genetic background was heterozygous the viability was reduced by about 1.5 percent; in a nearly homozygous background the viability was enhanced by about the same amount. In a partially inbred background the results were intermediate. The results are therefore in agreement with earlier experiments of Wallace and Mukai.
mesh_terms: D000818:Animals; D002875:Chromosomes / Q000528:radiation effects; D004331:Drosophila melanogaster / Q000528:radiation effects*; D005260:Female; D005804:Genes, Lethal; D005808:Genes, Recessive; D006579:Heterozygote; D007178:Inbreeding; D008297:Male; D009154:Mutation; D011336:Probability; D011829:Radiation Dosage; D011831:Radiation Genetics; D013094:Spermatozoa / Q000528:radiation effects; D014965:X-Rays