Pairing of identical chromosomes in an isogenic tetraploid
Heredity, ISSN: 1365-2540, Vol: 53, Issue: 1, Page: 107-111
1984
- 6Citations
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Article Description
Meiotic pairing is described for a completely homozygous tetraploid derived from successively doubled haploid barley. The high quadrivalent frequency (4·58/cell) in cells with many chiasmata is indicative, either of discrete pairing at only two independent synaptic sites per chromosome or of continuous pairing amongst many sites in close proximity. A high frequency of discordance amongst ring quadrivalents (20·8 per cent) leads to lagging and irregular segregation in at least 20 per cent of first meiotic divisions. © 1984 The Genetical Society of Great Britain.
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