Population genomics identifies patterns of genetic diversity and selection in chicken.

ABSTRACT:

Background

There are hundreds of phenotypically distinguishable domestic chicken breeds or lines with highly specialized traits worldwide, which provide a unique opportunity to illustrate how selection shapes patterns of genetic variation. There are many local chicken breeds in China.

Results

Here, we provide a population genome landscape of genetic variations in 86 domestic chickens representing 10 phenotypically diverse breeds. Genome-wide analysis indicated that sex chromosomes have less genetic diversity and are under stronger selection than autosomes during domestication and local adaptation. We found an evidence of admixture between Tibetan chickens and other domestic population. We further identified strong signatures of selection affecting genomic regions that harbor

SUBMITTER: Li D 

PROVIDER: S-EPMC6446315 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature