Male recombination induced by mr factors in drosophila melanogaster

Gerasimova, T.I.

Genetika 18(8): 1374-1376


ISSN/ISBN: 0016-6758
Accession: 005846724

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A cytoplasmic fraction of fly homogenates containing MR factors causing recombination in males was injected into the female abdomen. Recombination for genes of the 2nd chromosome was discovered in males of the progeny from injected females. Recombination was caused by induction of injected MR factors or their products. These data point to the injections effect of MR factors which may have both chromosomal and cytoplasmic localization. Recombination demonstrates a number of discernible properties.sbd.the negative interference, clustering character, instability of crossing-overs which are not common for classical crossing-over in females. Male recombination appears to be the result of mutagenic effects of MR factors (insertion mutations, chromosome breakage).