Genetic variation in a semi-naturalDrosophilapopulation after a bottleneck I. Lethals, their allelism and effective population size
✍ Scribed by M. Begon; R. Chadburn; J. A. Bishop; C. Keill
- Book ID
- 104630881
- Publisher
- Springer Netherlands
- Year
- 1985
- Tongue
- English
- Weight
- 770 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0016-6707
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✦ Synopsis
A semi-natural Drosophila melanogaster population was twice forced through a genetic bottleneck and allowed to recover naturally. In one case additional variation was introduced to the recovering population. The percentage of lethal chromosomes, the level of allelism between these lethals, and the effective population size calculated from the allelism of these lethals all rose sharply in the few generations following each bottleneck, though this was not t~,e case in the very first generation. Thereafter this rise decelerated rapidly and never returned to pre-bottleneck levels. Additional introduced variation had little effect. The reasons for and implications of this pattern have been considered.