[Effect of parental age on endoreduplication of giant chromosomes and some quantitative traits in Drosophila melanogaster descendants].
We studied the influence of parental age on the degree of polyteny of giant chromosomes and expressivity of mutation eyeless in Drosophila melanogaster descendants. The parental age equal to six days exerted an adverse effect on the function of endoreduplication of giant chromosomes in strain eyeless. The highest degree of polyteny was observed in descendants of four- and ten-day imago. The maximum reduction of eye facets was observed in descendants of four-day imago, while in the progeny of older parents, the mutation expressivity was sharply reduced. Relations between the changes in chromosome polyteny, expressivity of mutation eyeless, and earlier studied components of adaptation were statistically analyzed in descendants of aging parents of this Drosophila strain.
Rarog
M A
MA
Research Institute of Biology, Khar'kov National University, pl. Svobody 4, Khar'kov, 61077 Ukraine.
Vorob'eva
L I
LI
Strashniuk
V Iu
VIu
D000375:Aging / Q000235:genetics*; D000818:Animals; D002875:Chromosomes / Q000648:ultrastructure; D003433:Crosses, Genetic; D004331:Drosophila melanogaster / Q000235:genetics*; D005124:Eye Abnormalities / Q000235:genetics; D005260:Female; D008297:Male; D040641:Quantitative Trait Loci / Q000235:genetics*; D012469:Salivary Glands / Q000648:ultrastructure