Sentence examples for molecular clock based from inspiring English sources
Mammals were already a diverse bunch during the age of dinosaurs, according to a molecular clock based on genes from hundreds of vertebrate species.
Allan Wilson b. 1934 Nguarawahia, New Zealand d. 1991, left New Zealand in 1955 to pursue a Ph.D. at U.C. Berkeley and stayed to establish a renowned center for study of molecular evolution and originate the controversial idea of a "molecular clock" based on the observation that proteins and genes change at a steady rate over time.
Using a molecular clock based on differences in the genomes to calculate when coyotes and gray wolves split, the team got a surprise: These canids separated from the Eurasian wolf and into two distinct lineages between 6000 and 117,000 years ago.
Cells within the SCN have an endogenous molecular clock based on a network of interlocking feedback loops of genes and proteins.
We used molecular clock based methods to estimate divergence times in our matK gene tree.
Even with an accurate topology, rate variation can bias the estimate of divergence times with molecular clock based methods.
Molecular clocks based upon amino acid sequences in proteins have played a major role in the clarification of evolutionary phylogenies.
Some molecular clocks based on genetic differences estimate that major lineages began to split and diversify as far back as 100 million years ago.
Molecular clocks based upon mutation rates and calibrated by the fossil record suggested that this common ancestor lived as little as a few million years ago, although recent estimates put this ancestor at seven to five million years ago.
The ages of NIRVs have turned out to be much older than those age estimates from molecular clocks based on nucleotide substitution rates.
Therefore, we selected RNAP2 sequences from members of Bacteria, Archaea, and Eukarya by using TimeTree, which is a professional resource where divergence time between species is reported on the molecular clocks based on studies published in peer-reviewed journals (Hedges et al. 2006).
