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. 1991 Feb;127(2):399–410. doi: 10.1093/genetics/127.2.399

Genetic Linkage Map of Fishes of the Genus Xiphophorus (Teleostei: Poeciliidae)

D C Morizot 1, S A Slaugenhaupt 1, K D Kallman 1, A Chakravarti 1
PMCID: PMC1204367  PMID: 2004711

Abstract

Analysis of genotypes of 76 polymorphic loci in more than 2600 backcross hybrid individuals derived from intra- and interspecific genetic crosses of fishes of the genus Xiphophorus (Poeciliidae) resulted in the identification of 17 multipoint linkage groups containing 55 protein-coding loci and one sex chromosome-linked pigment pattern gene. Multipoint linkage analyses identified highly probable gene orders for 10 linkage groups. The total genome length was estimated to be ~18 Morgans. Comparisons of the Xiphophorus linkage map with those of other fishes, amphibians and mammals suggested that fish gene maps are remarkably similar and probably retain many syntenic groups present in the ancestor of all vertebrates.

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Selected References

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