(Science: genetics molecular biology) A class of recessive lethal mutants of drosophila The heterozygotes grow more slowly, are smaller and less fertile than the wild type flies. There are about 40 loci that produce minute mutants.
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... most sophisticated combination treatments there will eventually be a mutant that is resistant to all the drugs. The chances for this are so small ... everybody to look upon, you just have to remove your blindfold for a minute and let yourself see them.
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