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Alternatively, the plumage variation may be of old origin and could have survived in both refugia, with the plumage differentiation following during the expansion of each clade.
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The terms weak and strong are relatively recent, while the terms negative and positive atheism are of older origin, having been used (in slightly different ways) in the philosophical literature and in Catholic apologetics.
This dynamics indicates that many CNSs are of older origin but have been lost in some species, making it difficult to trace their evolutionary origin.
Our results do not specifically address this hypothesis, but we suspect that large seeds in S. italica are the result of human selection during the last 10,000 years, and that S. faberi is of older origin than this.
Although there is debate about the exact area of origin of Enhydra within North America [ 93, 139], the earliest fossils leading to this lineage are of Old World origin [ 93] and accordingly, we coded this taxon as 0 = Old World or Eurasia.
The area is quite fertile for fruit and other horticulture, as most of the soil is of old volcanic origin.
This would suggest ancient roots of the whole superfamily as thermophilic anaerobic bacilli are supposed to be of very old origin [52].
Given the frequency of somatic mutations in the two common scion and rootstock MLLs, these clones are likely to be of very old origin.
While Madagascar and the granitic Seychelles are of old continental origins, the Mascarene Islands Mauritius and Réunion have been shown to be much younger as the result of the similar process of plate movement over a stationary volcanic hot spot that formed the Hawaiian archipelago and the Galápagos Islands in the Pacific [ 2– 5].
Even though it is likely that the Finnish wolf population underwent heavy local population declines in the 1920s and 1970s [ 12, 16, 17], our results indicate that the largest genetic changes are probably of older origin, and connected to the assumed abrupt population decline in the turn of the 19th and 20th centuries.
Most of the samples were found to be of ancient origin; the oldest dated rock is around 300,000 years old.
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