Does ‘affinity’ hold the key to fertility in the female mule?
- 1 February 1981
- journal article
- research article
- Published by Hindawi Limited in Genetics Research
- Vol. 37 (1) , 105-109
- https://doi.org/10.1017/s001667230002005x
Abstract
SUMMARY: Michie's hypothesis of ‘affinity’ is invoked to explain how fertility might theoretically be achieved in a female mule or hinny. Chromosomally balanced haploid gametes could be produced in these inter-specific hybrids by movement of centromeres of similar ancestry to opposite poles at anaphase I of meiosis. Male hybrids could probably never be fertile on account of the low numbers of spermatozoa produced; females, on the other hand, might occasionally achieve fertility by the ovulation of a chromosomally balanced egg.Keywords
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