Hyperthermia and radiation-induced dominant lethals and chromosome loss in female Drosophila melanogaster.
The hyperthermia treatment, 38 degrees C for 1 hour significantly increased the dominant lethals induced by 1000R of X-rays in immature oocytes. The viability and chromosome loss in mature eggs were affected by either heat treatment or radiation. Hyperthermia treatment given before radiation exposure also significantly increased radiation-induced loss of the X chromosome in immature oocytes. Heat treatment did not increase radiation-induced nondisjunction of the chromosomes.
D000818:Animals; D002869:Chromosome Aberrations; D002875:Chromosomes / Q000528:radiation effects*; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D005799:Genes, Dominant; D005804:Genes, Lethal; D005821:Genetic Techniques; D006358:Hot Temperature; D013997:Time Factors; D014965:X-Rays