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Y-Single Nucleotide Polymorphisms Diversity in Chinese Indigenous Horse
Haoyuan Han1, Qin Zhang1, Kexin Gao1
1College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China .
Asian-Australasian Journal of Animal Sciences
|June 25, 2015
Summary
Chinese horses exhibit Y chromosome genetic diversity, with identified single nucleotide polymorphisms (SNPs) and indel mutations. These findings reveal distinct patterns compared to other horse populations, aiding understanding of paternal origins.
Area of Science:
- Genetics
- Zoology
- Animal Breeding
Background:
- Equine Y chromosome exhibits low genetic variability, suggesting limited paternal lineages in domesticated horses.
- Mitochondrial DNA (mtDNA) in horses shows high genetic diversity, contrasting with Y chromosome patterns.
Purpose of the Study:
- To investigate Y chromosome polymorphisms in Chinese indigenous horses.
- To identify genetic diversity and paternal lineages within Chinese horse breeds.
Main Methods:
- Direct sequencing and Restriction Fragment Length Polymorphism (RFLP) were employed.
- Analysis of 33 Y chromosome specific loci in 304 individuals from 13 Chinese indigenous horse breeds.
Main Results:
- Two Y-single nucleotide polymorphisms (SNPs) and one Y-indel were identified.
- The Y-50869 SNP showed the highest variation frequency (24.67%).
- Five Y-SNP haplotypes were identified, shared across breeds, indicating genetic diversity.
Conclusions:
- Chinese indigenous horses possess Y chromosome genetic diversity, with distinct polymorphic patterns compared to European and American horses.
- Further research is needed to fully understand the domestication and paternal origins of Chinese indigenous horses.
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