Impact of Parental Bos taurus and Bos indicus Origins on Copy Number Variation in Traditional Chinese Cattle Breeds

摘要: Copy number variation (CNV) is an important component of genomic structural and plays a role not only in evolutionary diversification but also domestication. Chinese cattle were derived from Bos taurus indicus, several breeds presumably are hybrid origin, the evolution CNV regions (CNVRs) has yet been examined this context. Here, we CNVRs, mtDNA D-loop sequence variation, Y-chromosomal single nucleotide polymorphisms to assess impact maternal paternal B. indicus origins on distribution CNVRs 24 domesticated bulls. We discovered 470 genome-wide 72 which shared by all three Y-lineages (B. taurus: Y1, Y2; indicus: Y3), whereas 265 inferred taurine or indicine lineages, 228 when considering their origins. Phylogenetic analysis uncovered eight taurine/indicine hybrids, principal CNVs corroborated exchange during hybridization. The patterns tended be lineage-specific, correlation revealed significant positive negative co-occurrences across lineages. Our study suggests that partly result selective breeding domestication, hybridization introgression.