1921
Volume 85, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Abstract.

The geographical distribution of genetic variation in samples ( = 386) from nine districts across Sri Lanka is described using three markers; the -3α (-3α) gene, and the two microsatellites m1501 and m3502. At -3α, 11 alleles were found with an expected heterozygosity (H) of 0.81, whereas at m1501 and m3502, 24 alleles (H = 0.85) and 8 alleles (H = 0.74) were detected, respectively. Overall, 95 unique three locus genotypes were detected among the 279 samples positive at all three loci (H = 0.95). Calculating the pairwise fixation index ( ) revealed statistically significant population structure. The presence of identical 2-loci microsatellite genotypes in a significant proportion of samples revealed local clusters of closely related isolates contributing to strong linkage disequilibrium between marker alleles. The results show evidence of high genetic diversity and possible population substructure of populations in Sri Lanka.

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2011-12-01
2017-09-26
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  • Received : 27 May 2011
  • Accepted : 12 Sep 2011

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