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Using Fluorescence In Situ Hybridization (FISH) to Monitor the State of Arm Cohesion in Prometaphase and Metaphase I Drosophila Oocytes
Published on: December 6, 2017
Why Mendelian segregation?
1St John's College and Oxford Centre for Gene Function, Oxford University, Oxford OX13JP, UK. francisco.ubeda@sjc.ox.ac.uk
Abstract:
The discovery of alleles that are able to distort segregation during meiosis in their favour raises the question of why Mendelian segregation is the rule and segregation distortion the exception. Previous research on this topic was limited by an unrealistic assumption: equal segregation in the two sexes. Ubeda and Haig [(2005) Genetics 170, 1345-1357] provide a new model allowing sex-specific segregation distortion. This model shows that natural selection favours departure from Mendelian expectations. The evolutionary instability of Mendelian segregation under more realistic assumptions requires a new paradigm that explains its ubiquity.
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