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Triplications and the problem of non-homologous crossing-over

Published online by Cambridge University Press:  14 April 2009

H. Slizynska
Institute of Animal Genetics, Edinburgh, 9


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Two triplications induced in a normal halpoid chromosome complement by TEM (Tr-I) and by mustard gas (Tr-II) are described. Two models which may lead by successive steps to the formation of a triplication are suggested. The induction of two latent breaks is essential in both of them. The origin of repeats in general is discussed. It is concluded that chromosome breaks rather than non-homologous crossing-over constitute the major source of repeats.

Research Article
Copyright © Cambridge University Press 1968



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