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7 lip 2018 · The first appearance of dogs in the North American archaeological record occurs ~6,000 years after the earliest evidence of human activity (4, 11). In addition, our molecular clock analysis indicates that the PCD lineage appeared ~6,500 years after North American human lineages (Fig. 1b) (10).
In 2021, a literature review of the current evidence infers that domestication of the dog began in Siberia 26,000-19,700 years ago by Ancient North Eurasians, then later dispersed eastwards into the Americas and westwards across Eurasia.
4 lis 2020 · A genetic analysis revealed that by the end of the last ice age—around 11,000 years ago—there were a least five distinct lineages that gave rise to dogs in New Guinea, the Americas, northern ...
6 lip 2018 · Dogs were present in the Americas before the arrival of European colonists, but the origin and fate of these precontact dogs are largely unknown. We sequenced 71 mitochondrial and 7 nuclear genomes from ancient North American and Siberian dogs from time frames spanning ~9000 years.
Artificial selection is the selection of advantageous natural variation for human ends and is the mechanism by which most domestic species evolved. Most domesticates have their origin in one of a few historic centers of domestication as farm animals. Two notable exceptions are cats and dogs.
23 mar 2021 · Meet the Scientist Studying How Dogs Evolved From Predator to Pet. Learn about how humans of the past helped build the bond between us and our favorite furry friends. Emily Leclerc. March 23,...
3 mar 2020 · In the first phase, highly specific behaviors valued by nomadic hunter-gatherer societies, such as tracking and consuming prey, drove the initial evolution of primary dogs at the beginning of domestication (Ostrander et al., 2017).
