The amount of heterozygosis to be expected in an approximately pure line

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 1936 English Publisher:Springer Science and Business Media LLCJournal:Journal of Genetics, volume 32, pages 375-391 (issn: 0022-1333,

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Authors: J. B. S. Haldane;

doi: 10.1007/bf02982522

The amount of heterozygosis to be expected in an approximately pure line

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Abstract

Heterozygosis in an approximately pure line is due to two causes. On the one hand, part of the heterozygosis of the original ancestors remains for some generations. Owing to linkage a few zygotes may have comparatively large heterozygous segments, but most of them are completely homozygous. Thus it is calculated that in maize after 20 generations of self-fertilisation all but about 1 plant in 2500 is fully homozygous, but the average length of chromosome heterozygous in the exceptional plants is 2·5 units.

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