HUMTH01 allele distribution in four human samples. An interpopulation analysis
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Abstract
The analysis of STR HUMTH01 in four populations (Galicia, SE Spain, Morocco, Cape Verde) was carried out, with up to 8 alleles being found. The frequencies of these alleles determine values of heterozigosity ranging from 0,826 detected in Cape Verde to 0,778 in Morocco. A global comparison of world populations shows clear patterns of differentiation among the main human groups, both by way of the analysis of allele distribution profiles and by the application of a Correspondence Analysis. Caucasian populations are mainly characterised by the highest frequencies in allele 9.3, Mongoloids by a very high frequency of allele 9 and Negroids show the highest frequencies for allele 7 and mainly 8. A significant negative correlation (r=−0,916, p<0,001) found in the relationships between alleles 9 and 9.3 seems to suggest the participation of non-random evolutionary forces in the population dynamics of this marker.
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