Abstract
A Drosophila melanogaster population was exposed for 25 generations to 60 micrograms tetraethyllead per gram of medium. Selection over this period resulted in an increase in fecundity, hatchability and larva-to-adult viability. Chromosome assay showed that response in these traits was generally under additive genetic control in conformity with existing results in the literature on the genetics of resistance to acute environmental stress in D. melanogaster.
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