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Analysis of copy number variants of the duplicated alpha-, zeta-, and gamma-globin genes in eastern Polynesians revealed a high frequency of both triplicated-zeta-gene chromosomes and a specific alpha thalassemia deletion. This deletion and a novel restriction-enzyme-site polymorphism associated with a zeta zeta zeta chromosome are found only in Melanesians and Polynesians. Analysis of alpha-globin restriction-enzyme haplotypes indicated further similarities to Melanesians but suggested an additional non-Melanesian genetic component in eastern Polynesia. Several globin gene alleles showed evidence of marked frequency fluctuations due to genetic drift.

Type

Journal article

Journal

Am J Hum Genet

Publication Date

05/1987

Volume

40

Pages

453 - 463

Keywords

Alleles, Gene Frequency, Genetic Markers, Genetic Variation, Genetics, Population, Globins, Humans, Polymorphism, Restriction Fragment Length, Polynesia