Genetica

, Volume 66, Issue 1, pp 11–20 | Cite as

Genetic variation in a semi-natural Drosophila population after a bottleneck I. Lethals, their allelism and effective population size

  • M. Begon
  • R. Chadburn
  • J. A. Bishop
  • C. Keill
Article
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Accepted:

Abstract

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 the 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.

Keywords

Genetic Variation Population Size Additional Variation Effective Population Effective Population Size 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Dr W. Junk Publishers 1985

Authors and Affiliations

  • M. Begon
    • 1
  • R. Chadburn
    • 2
  • J. A. Bishop
    • 2
  • C. Keill
    • 2
  1. 1.Department of ZoologyThe University of LiverpoolLiverpoolU.K.
  2. 2.Department of GeneticsThe University of LiverpoolLiverpoolU.K.

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