A genome-wide scan for copy number variations using high-density single nucleotide polymorphism array in Simmental
Yang Wu1, Huizhong Fan, Shengyun Jing
1Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China.
Animal Genetics
|April 29, 2015
Summary
This study identified 263 copy number variation regions (CNVRs) in Simmental cattle using high-density SNP data. These findings provide a valuable map of cattle genetic variation and insights into genomic structural variation.
Area of Science:
- Genomics
- Animal Genetics
Background:
- Copy number variations (CNVs) are significant sources of genetic variation in cattle, complementing single nucleotide polymorphisms (SNPs).
- Accurate detection of CNVs is crucial for understanding cattle genome diversity and traits.
Purpose of the Study:
- To perform genome-wide copy number variation detection in Simmental cattle.
- To identify and characterize copy number variation regions (CNVRs) and associated genes.
- To expand the existing map of cattle CNVs.
Main Methods:
- Genome-wide CNV detection using Illumina Bovine HD BeadChip (770k) SNP data.
- Analysis of data from 792 Simmental cattle.
- Validation of selected CNVRs using quantitative PCR.
Main Results:
- Identified 263 copy number variation regions (CNVRs), including losses, gains, and combined regions, covering 35.48 Mb of the bovine genome.
- CNVRs varied in length, with an average of 134.78 kb.
- 313 genes within 136 CNVRs were associated with biological functions like transmembrane and olfactory transduction activities.
- Quantitative PCR validated 77.6% of the nine randomly selected CNVRs.
Conclusions:
- The study presents a comprehensive map of cattle CNVs based on high-density SNP data.
- This map enhances the understanding of genomic structural variation in cattle.
- The identified CNVRs and genes offer valuable resources for future cattle genetics research.
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