The Study of Joint Inheritance of Mutations Impairing the Structure of Meiotic Chromosomes in Rye Secale cereale L.

The Study of Joint Inheritance of Mutations Impairing the Structure of Meiotic Chromosomes in Rye... Genetic analysis has demonstrated that meiotic mutations mei8 (irregular condensation and fragmentation of meiotic chromosomes) andmei10 (chromosome overcompaction) are nonallelic. Mutation mei10 exhibits digenic inheritance (with a segregation ratio of 13 : 3) in the combinations of crosses studied. It is assumed that the phenotypic expression of mutation mei10is suppressed by the effect of recessive genelch1 or lch2 (long chromosomes), both of which have been revealed in one of the parental lines (Mc10). These genes determine weak condensation of meiotic chromosomes. In double mutantsmei8 mei10, the mutations are expressed independently of each other. Gene mei10 is linked with gene mei8(r^ = 36.8 ± 5.38%); genes lch1 and lch2 are not linked either with them or with each other. Taking into account the data on the linkage between genes mei10and sy10 and between mei8andsy10, the order of genes in the linkage group is shown to be the following: mei8–sy10–mei10. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

The Study of Joint Inheritance of Mutations Impairing the Structure of Meiotic Chromosomes in Rye Secale cereale L.

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Publisher
Springer Journals
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1023/A:1024453709669
Publisher site
See Article on Publisher Site

Abstract

Genetic analysis has demonstrated that meiotic mutations mei8 (irregular condensation and fragmentation of meiotic chromosomes) andmei10 (chromosome overcompaction) are nonallelic. Mutation mei10 exhibits digenic inheritance (with a segregation ratio of 13 : 3) in the combinations of crosses studied. It is assumed that the phenotypic expression of mutation mei10is suppressed by the effect of recessive genelch1 or lch2 (long chromosomes), both of which have been revealed in one of the parental lines (Mc10). These genes determine weak condensation of meiotic chromosomes. In double mutantsmei8 mei10, the mutations are expressed independently of each other. Gene mei10 is linked with gene mei8(r^ = 36.8 ± 5.38%); genes lch1 and lch2 are not linked either with them or with each other. Taking into account the data on the linkage between genes mei10and sy10 and between mei8andsy10, the order of genes in the linkage group is shown to be the following: mei8–sy10–mei10.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Oct 7, 2004

References

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