Exact(2)
Their evolutionary divergence is estimated to have occurred 0.5 million years ago through the migration of ancestral D. yakuba to the island of Saõ Tomé (Llopart et al. 2005a).
It has also been assumed that northward migration of ancestral Astyanax surface-dwelling forms followed formation of the Panamanian-Colombian land bridge in the late Tertiary, roughly 3.3 MYa [ 5, 10, 25- 28].
Similar(58)
When combined with archaeological and linguistic data, genetic markers can provide valuable information about the geographical location and migration patterns of ancestral populations.
The Molino cave population is derived from the more recent migration wave of ancestral surface fish populations [ 18, 29].
They suggested that the separation of the cytotypes may have occurred at the end of the Pliocene, after the great migration of the ancestral forms of these species, which came from North America.
Some x2 sites may remain x2 (migration of the ancestral allele; also, more rarely, some x2 may become f2 as discussed above) while others may become S sites (migration of the derived allele).
Given that estimation of probability of significant heterozygosity implemented in the BOTTLENECK software can predict recent (within several generations) events in populations, historical events (e.g. migration of small ancestral populations into predecessor Lake Biwa) do not account for the apparently bottlenecked populations.
The most plausible explanation for these observations could be an ancestral migration of individuals bearing ancestral lineage Q* to Indian subcontinent followed by an autochthonous differentiation to Q4 and Q5 sublineages later on.
The most plausible explanation for these observations could be an ancestral migration of individuals bearing ancestral lineage Q* to Indian subcontinent with an autochthonous differentiation to Q4 and Q5 sublineages later on.
Scientists at Trinity College Dublin used a technique called whole-genome analysis to "read" not the unique characteristics of each individual, but a wider history of ancestral migration and settlement in the DNA from all four bodies.
We next compared this best-fit model (residual ancestral migration and nearly full replacement, δ≥0.99) with other models involving major replacement (δ≥0.5, Figure 3A), and we found that, independently of the values of ancestral migration rate (m0), our approach still identifies the "correct" model in more than 95% of cases (200 simulated pseudodatasets for each pairwise comparisons).
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