Sentence examples for using a strict clock from inspiring English sources

For the UK MSM clade we estimated an origin in 1992 (1988 1997) using a relaxed clock model, and 1990 1985 to 19944) using a strict clock model.

Although the 95% HPD values for the skyline plots under the relaxed clock were too wide for meaningful interpretation, those generated using a strict clock gave a reasonable demographic signal (Figure 2 and S2).

We analysed 50 replicates with Physher and BEAST using a strict clock.

In contrast, the intervals remained similarly narrow for all levels of rate variation when analysed using a strict clock in MCMCTREE.

This is the case in all *BEAST analyses with a relaxed clock model, whereas all *BEAST analyses using a strict clock model recover clade B, although with rather low support (PP mean 0.80 ± 0.06; not shown).

We therefore proceeded using a strict clock model as the simplest possible scenario and checked afterwards that the estimated substitution rates were in line with previous findings for HCV.

All EBSP analyses used a strict clock.

We used a strict clock with a random starting tree.

The estimate of the standard deviation of the lognormal distribution of rates did not overlap 0, so we could not use a strict clock with these data.

We used a strict clock model (which we preferred because we have a single secondary constraint), a Yule process tree prior, and MCMC chains of 10 million generation length, with parameters sampled every 1000th generation.

We therefore used a strict clock model, and calibrated it with a hummingbird stem group fossil from the oil shale of Messel in Southern Germany that provides a minimum age for the divergence between hummingbirds and swifts [ 36].