Sentence examples for based on molecular clock from inspiring English sources

Published primate divergence times from the accepted paleontological records and the age of the pseudogenes based on molecular clock calculations were compared to data obtained by detection of PCR products exhibiting the expected amplicon size of the pseudogene region.

Based on molecular clock data, this divergence occurred long before domestication of rice and corresponds to germplasm that today is indica and japonica.

Based on molecular clock estimation, Trigonognathus is thought to have originated around 41 million years ago during the Middle Eocene, as part of a larger evolutionary radiation of etmopterid genera.

The origin of monocot angiosperms has now been dated reliably to the Early Cretaceous based on molecular clock [31], [32] and fossil [33] evidence.

Based on molecular clock calibrations and fossil evidence (Text S7) showing that Labrini were present in the Mediterranean 14.0 Ma, it has been suggested that the ancestor of Labrini migrated from the Indopacific into the Mediterranean prior to the closure of this seaway, 20.5−19.5 Ma [27].

The latter cases are, however, considered evolutionary unlikely based on molecular clock estimates [ 53] of Pontohedyle.

However, a more comprehensive phylogenetic hypothesis that directly combines molecular data and fossils is required to rigorously estimate the timing of cetacean diversification, to test divergence times based on molecular clocks, and also to develop more reliable calibration points for subsequent molecular clock studies.

In all analyses that included extinct taxa, we were not able to confirm the hypothesis based on molecular clocks that eight to ten distinct lineages of cetaceans that have extant representatives existed by the end of the Oligocene [ 13, 20, 21, 24].

The estimated divergence times of the selected pseudogenes utilizing calculations based on the molecular clock theory correlated well with experimental PCR detection of the selected pseudogenes represented in this study.

The HST genome has now provided a good chance to test this hypothesis, because it is quite old – about 124,000 years, according to an estimate based on the molecular clock (in contrast to most other published Neanderthal genomes, which are much more recent).

This analysis was based on a molecular clock, the idea that in certain stretches of DNA or RNA, mutations accumulate at a reliable rate (e.g., one per year), allowing them to be used as timers: the more mutations the genetic material has accumulated, the longer since it split off from its ancestral sequence.