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. 1988 Oct;85(20):7680–7684. doi: 10.1073/pnas.85.20.7680

Pst I restriction fragment length polymorphism of human placental alkaline phosphatase gene: Mendelian segregation and localization of mutation site in the gene.

L Tsavaler 1, R C Penhallow 1, H H Sussman 1
PMCID: PMC282256  PMID: 2902636

Abstract

The pattern of inheritance of a Pst I restriction fragment length polymorphism (RFLP) of the human placental alkaline phosphatase gene was studied in nine nuclear families by Southern blot hybridization analysis of genomic DNA. The dimorphic RFLP is defined by the presence of allelic fragments 1.0 kilobase and 0.8 kilobase long. The results of this study show that the two alleles of the PstI RFLP of the placental alkaline phosphatase gene segregate as codominant traits according to Mendelian expectations. For a polymorphism to be useful as a genetic marker the probability that an offspring is informative (PIC) must be at least 0.15. The allelic frequency of the 1.0-kilobase allele is 0.21, which correlates to a probability that an offspring is informative of 0.275 and is indicative of a useful polymorphism. By using probes derived from different regions of the placental alkaline phosphatase cDNA, the mutated Pst I site causing the RFLP was located in the penultimate intron 2497 base pairs downstream from the transcriptional initiation site.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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