An appreciation of the scale and frequency of climatic oscillations in the past few million
years is modifying our views on how evolution proceeds. Such major events caused …

Climate change in the past has led to significant changes in species' distributions. However,
how individual species respond to climate change depends largely on their adaptations and …

What are the models used in phylogenetic analysis and what exactly is involved in Bayesian
evolutionary analysis using Markov chain Monte Carlo (MCMC) methods? How can you …

▪ Abstract About 20 years ago, DNA sequences were separately described from the quagga
(a type of zebra) and an ancient Egyptian individual. What made these DNA sequences …

One of the great debates about extinction is whether humans or climatic change caused the
demise of the Pleistocene megafauna. Evidence from paleontology, climatology …

The estimation of phylogenetic divergence times from sequence data is an important
component of many molecular evolutionary studies. There is now a general appreciation …

Molecular sequences obtained at different sampling times from populations of rapidly
evolving pathogens and from ancient subfossil and fossil sources are increasingly available …

Between fifty and ten thousand years ago, most large mammals became extinct everywhere
except Africa. Slow-breeding animals also were hard hit, regardless of size. This unusual …

Glacial cycles have played a dominant role in sha** the genetic structure and distribution
of biota in northwestern North America. The two major ice age refugia of Beringia and the …

Genetic analyses of permafrost and temperate sediments reveal that plant and animal DNA
may be preserved for long periods, even in the absence of obvious macrofossils. In Siberia …