DNA polymorphism of alkaline phosphatase isozyme genes: linkage disequilibria between placental and germ-cell alkaline phosphatase alleles
- PMID: 1357964
- PMCID: PMC1682846
DNA polymorphism of alkaline phosphatase isozyme genes: linkage disequilibria between placental and germ-cell alkaline phosphatase alleles
Abstract
The use of human placental alkaline phosphatase (PLAP) cDNA as a probe allows the detection and identification of restriction DNA fragments derived from three homologous genes, i.e., intestinal alkaline phosphatase (AP), germ-cell AP (GCAP), and PLAP. In previous RFLP studies we have reported linkage disequilibria between an RsaI and two PstI (a and b) polymorphic restriction sites and electrophoretic types of PLAP. In this report we present evidence that, in spite of the strong correlation with PLAP types, PstI(b) is an RFLP of GCAP. The data indicate close linkage between the PLAP and GCAP loci.
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