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Allozyme divergence between different gene arrangements in Drosophila subobscura
Author(s) -
Pinsker W.,
Böhm I.
Publication year - 1989
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1046/j.1420-9101.1989.2050353.x
Subject(s) - biology , chromosomal polymorphism , drosophila subobscura , gene , genetics , divergence (linguistics) , chromosome , recombination , chromosomal inversion , genetic divergence , population , evolutionary biology , population genetics , karyotype , genetic diversity , linguistics , philosophy , demography , sociology
Allozyme and chromosomal polymorphism were analysed simultaneously in three population samples of Drosophila subobscura from Scotland, Germany and Italy. The study revealed significant genic divergence between the various chromosomal gene arrangements for the loci Acph, Lap and Pep, which are located inside inversions. No difference was found with the loci Me and Odh, which are both on the same chromosome but proximal to the structurally polymorphic region. Samples of a given gene arrangement taken from the different localities are genetically uniform. The data indicate that the observed non‐random associations between enzyme genes and chromosomal inversions are the result of inhibited recombination in heterokaryotypes and gradual differentiation of the separated gene pools, rather than selection and coadaptation.