キイロショウジョウバエの地域集団におけるトランスポゾンが原因と思われる非致死有害遺伝子荷重の増加〔英文〕

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An extremely large amount of detrimental load was found in the Osaka population of D. melanogaster, although the frequency of lethal-carrying second chromosomes (Q) was not different from the average of Japanese populations (Q=0.199 and D:L=2.04). Tests for male recombination and sterility tests for the P-M dysgenic system indicated that there is a putative transposon (tentatively named MY factor) which induces non-lethal deleterious mutations at a rate about 140 times higher than that of recessive lethal mutations per second chromosome in the M cytoplasm, and the frequency of individuals carrying the M cytoplasm was estimated to be ca. 20%. Thus, it was concluded that the extremely large detrimental load was induced by the MY factors.
日本遺伝学会の論文