Summary
A genetically abnormal but structurally normal second chromosome (31.1 MRF) which induces recombination in the male sex, was introduced by outcrossing into the cytoplasm of a normal strain. In this new combination, male recombination frequency induced by females dropped from 3.81% to 0.17% whithin 10 generations, indicating a gradual acquisition of resistance against the activities of the 31.1 MRF.
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Part of this work was carried out in the Dept of Genetics, University of Cambridge, England, and was supported by a grant from the Greek State Scholarship Foundation. I am greatly indebted to Drs M. Ashdurner and G. Richards (Dept of Genetics, University of Cambridge, England) for helpful advice, as well as to Prof. M. Pelecanos (Dept of Genetics, University of Patras, Greece) for constructive criticism and corrections of the manuscript.
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Yannopoulos, G. Progressive resistance against the male recombination factor 31.1 MRF acquired byDrosophila melanogaster. Experientia 34, 1000–1002 (1978). https://doi.org/10.1007/BF01915311
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DOI: https://doi.org/10.1007/BF01915311