Abstract
DOBZHANSKY1, Gershenson (above) and others have concluded that the disjunction of chromosomes does not depend directly on the occurrence of crossing-over between them, as I assume to be the case in all homozygous organisms2. They maintain that some ” other factor” is concerned in their experiments. But these experiments have necessarily made use of hybridity, without which genetical tests are impossible ; and the particular kind of hybridity (structural hybridity) they have used is bound to have a complicated effect on disjunction. It is itself the ” other factor”. Thus reciprocal crossing-over within two relatively inverted segments should give normal chromosomes with normal disjunction, other things being equal.
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Z.I.A.V., 64, 269–309.
J. Genet., 31, 185–212.
J. Genet., 31, 163–184.
J. Genet., in the press.
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DARLINGTON, C. Crossing-Over and Chromosome Disjunction. Nature 136, 835 (1935). https://doi.org/10.1038/136835a0
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DOI: https://doi.org/10.1038/136835a0
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