The genomics of selection in dogs and the parallel evolution between dogs and humans

• The genetic bases of demographic changes and artificial selection underlying domestication are of great interest in evolutionary biology. Here we perform whole-genome sequencing of multiple grey wolves, Chinese indigenous dogs and dogs of diverse breeds. Demographic analysis show that the split between wolves and Chinese indigenous dogs occurred 32,000 years ago and that the subsequent bottlenecks were mild. Therefore, dogs may have been under human selection over a much longer time than previously concluded, based on molecular data, perhaps by initially scavenging with humans. Population genetic analysis identifies a list of genes under positive selection during domestication, which overlaps extensively with the corresponding list of positively selected genes in humans. Parallel evolution is most apparent in genes for digestion and metabolism, neurological process and cancer. Our study, for the first time, draws together humans and dogs in their recent genomic evolution.

Ämnesord

NATURVETENSKAP  -- Biologi (hsv//swe)

NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Nyckelord

animal experiment

article

biological phenomena and functions concerning the entire organism

breed

Chinese

controlled study

demography

digestion

dog

domestication

evolution

gene sequence

genetic selection

genomics

human

human genome

metabolism

neoplasm

neurology

nonhuman

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)