The patterns of genetic polymorphism for soluble enzymes are similar in Colorado populations of Drosophilapseudoobscura at 1 800 and 3 500 m above sea level although their chromosomal polymorphisms are very different. Whatever forces of natural selection might affect enzyme variation cannot easily b
Genetic differentiation within laboratory populations ofDrosophila pseudoobscura
โ Scribed by J. A. Thomson
- Publisher
- Springer Netherlands
- Year
- 1964
- Tongue
- English
- Weight
- 790 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0016-6707
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Inversion polymorphism has been studied in three natural populations of Droso~~iIa anana~sae. The three cosmopolitan inversions have been detected in all the three populations analysed. Some quantitative variations in the inversion frequencies seem to exist and the level of inversion heterozygosity
1. Single inseminated females of Drosophila melanogaster derived from the same population led to discrete strains for both Sternopleural and abdominal chaeta number in agreement with other work, which indicates that the wild populations have genes polymorphic for these traits. Variability varied sig
The genetic differentiation [Formula: see text] within a subdivided population can be partitioned into two proportions, one due to differentiation within sub-populations and the other due to differentiation among subpopulations. A simple mathematical derivation of this procedure, known as Nei's G ST