Sentence examples for cluster of speciation from inspiring English sources

For example, by partitioning communities, such an event can isolate groups of populations and cause a temporal cluster of speciation events across co-distributed taxa.

Branching patterns within the genetic clusters reflect neutral coalescent processes occurring within species (Kingman 1982), whereas branching among genetic clusters reflects the timing of speciation events (Yule 1924).

Their plots spanned a far greater geographical area than mine, and they interpret phylogenetic clustering as the signal of speciation and limited dispersal abilities generating many closely-related but narrowly-distributed species within a given region.

Two central issues concern: 1) the importance of physical features of the genome that reduce recombination (e.g., chromosomal rearrangements and centromeres) in fostering divergence and 2) whether divergence is predicated on a small number of genes clustered in a few genomic "islands of speciation" (Turner et al. 2005) or on a larger number of genes arrayed across the genome.

The latter form "clades" that, rather than representing the history of speciation, mostly reflect the significantly greater rates of HGT within such clusters of organisms than between clusters.

In one model of speciation (Fraser et al., 2007), the degree of clustering depends on the level of recombination relative to mutation.

The separation of G. g. bankiva from the main cluster of birds indicates the possibility of a speciation event.

Evidence for this kind of speciation has been incomplete, however.

But unexpectedly, evolution of chemical defences also increases extinction rates -- even above the rate of speciation.

One common mode of speciation is known as geographic, or allopatric (in separate territories), speciation.

"It looks like that region with the coral reefs has always had a very high rate of speciation.