The loci for parathyroid hormone and beta-globin are closely linked and map to chromosome 15 in cattle
- PMID: 3243544
- DOI: 10.1016/0888-7543(88)90120-6
The loci for parathyroid hormone and beta-globin are closely linked and map to chromosome 15 in cattle
Abstract
We report linkage of the loci for beta-globin (HBB) and parathyroid hormone (PTH) in cattle and the assignment of both loci to the bovine chromosome region 15q13-q23. Linkage was analyzed in a family of paternal half-sibs by the use of restriction fragment length polymorphisms detected with bovine probes derived from the HBB and PTH genes. The HBB polymorphism was detected by digestion with restriction endonuclease HindIII and the PTH polymorphism with MspI. The maximum lod score for linkage of PTH with HBB was zeta = 4.52 at theta = 0, suggesting very close linkage of the two loci. The finding of the PTH/HBB linkage is corroborated by the physical assignment of both loci to the region 15q13-q23 by in situ hybridization with bovine genomic probes derived from PTH and HBB, respectively. Since HBB and PTH are syntenic in man and mouse, these results in cattle represent another example of conservation of synteny in the evolution of mammalian chromosomes.
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