Sentences with phrase «ancient horse population»

To place the horse evolutionary history in a chronological context, we estimated the divergence time between the ancestors of the ancient horse population and ancestors of the modern horse populations, as well as the divergence time between the ancestors of Przewalski's horses and domesticated horses.

In the second model (Fig. 3C), population structure was present among Late Pleistocene horses in Eurasia, with the ancient horse population originating, albeit earlier, from a similar background to the ancestral population of domesticated horses, whereas Przewalski's horses derived from a different background.

The D - statistic was used to examine the presence of gene flow between the ancient horse population, the Przewalski's horse population, and the population of domesticated horses.

ANC, ancient horse population; DOM, population of domesticated horses; PRZ, Przewalski's horse population.

Not exact matches

Their work on ancient DNA from Viking Age horses is more promising: Kool and Boessenkool have collected about 100 samples, in different states of preservation, from which they hope to build a detailed picture of how equine populations moved and changed.

This suggests that restocking from a wild population descendant from the ancient horses occurred during the domestication processes that ultimately led to the modern domesticated horses.

Patterns of population splits and migration events were analyzed using TreeMix (82) and the intersection of SNPs passing quality filters for the ancient specimens, all modern horses, and the domestic donkey (when included).

(B) Population model assuming admixture between the descending population of ancient horses and the population that gave rise to domesticated horses [split times in kya (Kyr)-RSB-.

We therefore assumed that this topology best reflected the relationships between ancient and living horse populations.

These ancient genomes reveal predomestic population structure and a significant fraction of genetic variation shared with the domestic breeds but absent from Przewalski's horses.

In the first model (Fig. 3B), the population including our ancient horses and their descendants first separated from common ancestors of domesticated horses and Przewalski's horses, and later admixed with the population ancestral to domesticated horses after it diverged from the Przewalski's horse population.

When considering the split between the ancient population and the ancestors of modern domesticated horses, where we identified significant amounts of gene flow (below), this method underestimates the population split time, and therefore provides a lower boundary for the population split time estimate (SI Appendix, section 2.8.2).

The presence of these SNPs in the ancient horses implies that selection for these traits did not occur on de novo mutations but on existing variation, which was either contributed to the domesticated stock by the ancient population through admixture or was cosegregating in both the ancestors of the ancient horses and the ancestors of the domesticated horses after their split.