A quadruplicated gamma-globin gene as a (5′-G gamma-gamma-gamma-A gamma- 3′) was detected in an adult Chinese during a survey designed to detect G gamma- and A gamma-globin genes in Japanese. Five triplicated (-G gamma-gamma-A gamma-) and two single (-gamma-) haplotypes were also detected in 103 healthy adult Japanese. All of the unusual chromosomes appeared to reflect an unequal but homologous crossover between G gamma- and A gamma-globin genes. A new Bgl II polymorphic site located around the 3′ terminal region of the G gamma-globin gene was also discovered.

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Copyright © 1986 by The American Society of Hematology
1986
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