Abstract

The 240-kb yeast artificial chromosome (YAC) HTY146 (D7S427) containing the telomere from the q arm of human chromosome 7 was subcloned into the cosmid vector sCOS-1. Cosmid subclones were screened for DNA polymorphisms by Southern blot analysis of restriction digests of DNA from random individuals. Four distinct polymorphisms were characterized. These markers provide a resource for defining the end of the genetic map for the long arm of human chromosome 7.

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