Recombination and balanced chromosome polymorphism suggested by DNA sequences 5' to the human delta-globin gene.

Abstract

Two types of chromosome (R and T) were found by cloning from six human individuals the 3.1-kilobase-pair EcoRI fragment that contains the bipolar Alu family repeat 5' to the delta-globin gene. Two type T fragments were identical in nucleotide sequence. Two type R fragments were identical except for one base. Both types are found in whites, blacks, and… (More)

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