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X-linked genes influence various complex traits in dairy cattle.
Marie-Pierre Sanchez1, Clémentine Escouflaire2, Aurélia Baur2
1Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas, 78350, France. marie-pierre.sanchez@inrae.fr.
BMC Genomics
|June 19, 2023
Summary
The X chromosome significantly influences complex traits in dairy cattle, explaining approximately 3.5% of genetic variance. This study identified numerous quantitative trait loci (QTL) and candidate genes, highlighting the X chromosome's genetic importance.
Area of Science:
- Genetics
- Animal Breeding
- Genomics
Background:
- Quantitative trait loci (QTL) studies in mammals often exclude the X chromosome due to male hemizygosity.
- This research investigates the X chromosome's role in 11 complex traits across six French cattle breeds.
Conclusions:
- The X chromosome plays a significant role in the genetic determinism of complex traits in dairy cattle.
- New functional candidate genes and variants on the X chromosome were identified, offering insights for genetic improvement.
- Findings may be applicable to other mammalian species due to conserved X-linked genes.
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