Open AccessVariability levels, population size and structure of American and European Drosophila montana populations
Author(s) -
Vieira Jorge,
Hoikkala Anneli
Publication year - 2001
Publication title -
heredity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.441
H-Index - 118
eISSN - 1365-2540
pISSN - 0018-067X
DOI - 10.1046/j.1365-2540.2001.00863.x
Subject(s) - biology , locus (genetics) , european population , population , genetics , sequence (biology) , nucleotide diversity , founder effect , evolutionary biology , population genetics , gene , demography , allele , haplotype , sociology
The level and patterns of nucleotide diversity have been characterized for two X‐linked loci, fused ( fu; a region of 2362 bp) and suppressor of sable ( su ( s ); a region of 413 bp), in one European and one American D. montana population. Sequence variation at these loci shows that the two populations are divergent, although they may not be completely isolated. Data on the level of silent site variability at su ( s ) (1.1% and 0.5% for the European and American populations, respectively) suggest that the effective population sizes of the two populations may be similar. At the fused locus, one European sequence was highly divergent and may have resulted from gene conversion, and was excluded from the analysis. With this sequence removed, the level of silent site variability was significantly lower in the European population (0.28%) than in the American population (2.3%), which suggests a selective sweep at or near fu in the former population.