A DNA polymorphism in close physical linkage with the proopiomelanocortin gene.

Abstract:

:Cellular DNAs from a panel of 20 unrelated individuals were screened for restriction fragment length polymorphisms (RFLP) with a DNA probe containing the first exon of the proopiomelanocortin gene (POMC), which has been assigned to chromosome 2p23-25. Digestion with the restriction endonuclease Sst 1 revealed a high frequency RFLP. The two alleles that were found are fragments of 10- and 15-kilobase (kb) length and are in Hardy-Weinberg equilibrium with frequencies of 72.6% and 27.4%, respectively. Informative families were tested for linkage between POMC/Sst 1 RFLP and other polymorphic markers of chromosome 2. Linkage was excluded to AcP-1 (2p23-25) at 15% recombination, which is still consistent with the chromosomal assignments for these genes. The close physical linkage (10 kb) of the polymorphic locus to the POMC gene makes this RFLP a suitable marker for future linkage studies involving the POMC gene.

journal_name

Am J Hum Genet

authors

Feder J,Migone N,Chang AC,Cochet M,Cohen SN,Cann H,Cavalli-Sforza LL

subject

Has Abstract

pub_date

1983-11-01 00:00:00

pages

1090-6

issue

6

eissn

0002-9297

issn

1537-6605

journal_volume

35

pub_type

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