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Correlation of compound autosome segregation and sex-chromosome disjunction in female Lucilia cuprina (Wied.) (Diptera: Calliphoridae)

Published online by Cambridge University Press:  14 April 2009

G. G. Foster
Affiliation:
CSIRO Division of Entomology, G.P.O. Box 1700, Canberra, A.C.T. 2601, Australia
R. H. Maddern
Affiliation:
CSIRO Division of Entomology, G.P.O. Box 1700, Canberra, A.C.T. 2601, Australia
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In Lucilia cuprina (Wiedemann) females, non-segregation of compound fifth-chromosomes is correlated with non-disjunction of the X chromosomes. Approximately two-thirds of eggs which inherit both maternal compound elements are nullo-X, suggesting that meiotic pairing between X chromosomes and compound autosomes has occurred. There was no evidence for pairing of the compounds and the X or Y chromosome in males. A limited amount of data suggests that high non-segregation frequencies may occur in the offspring of putative X/X/X and X/O females. These results suggest the existence of non-homologous (distributive) pairing in L. cuprina females.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1987

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