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Updated: Jun 5, 2026

Determination of the Mating Efficiency of Haploids in Saccharomyces cerevisiae
Published on: December 2, 2022
A new approach to sympatric speciation
1Roger Butlin is at the Dept of Zoology, University College, PO Box 78, Cardiff CF1 1XL, UK.
Abstract:
Sympatric speciation has always been a controversial issue. Recently, the debate has centred around the possibility that host race formation in phytophagous insects occurs as a first stage in this process. Now a new approach to host race formation - examining the population genetics of performance on alternative hosts - is challenging a major underlying assumption of this model. The evidence suggests that improved performance on one host is not generally accompanied by reduced performance on others.
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