Sentences with word «allopatric»

Speciation by vicariance is widely regarded as the most common form of speciation; and is the primary model of allopatric speciation.

But the climate change still had a deep impact on anthropoid evolution, because habitat fragmentation and an increased level of allopatric speciation took place as a result.

Our data illustrate that fitness can decline quickly in nature when previously allopatric species interbreed.

Just for a laugh some time, you should look up the research on allopatric speciation, the only proposed mechanism for the existing fossil record stasis / rapid change..

@ME II «Perhaps I'm wrong but wasn't allopatric speciation exactly what Gould was proposing, or at least built upon, for Punctuated Equilibrium?»

«Punctuated equilibrium originated as a logical extension of Ernst Mayr's concept of genetic revolutions by allopatric and especially peripatric speciation as applied to the fossil record.»

The concept of incomplete lineage sorting is commonly invoked to explain morphologically mixed groups where the features of interest are present also in allopatric populations belonging to the same taxon [51].

So a proper understanding of punc eq and allopatric specation shows that «gaps» supposedly flow right out of their biological model of evolution — not merely geology.

It's off the mark at every step (which I guess is why allopatric speciation remains the ONLY theory on how punctuated equilibrium occurs): — it requires that a mutation be present in the population and not get weeded out, which is not what is seen at all (gene pools wobble about the genetic mean for long periods of time).

Most breeds of dog do not (and likely can not) breed with wolves for a variety of reasons, including allopatric and / or human induced separation and mating rituals.

If most evolution happens in these rare instances of called allopatric speciation, then evidence of gradual evolution should be rare.

Comparisons of modern habitat and range of species to late Pleistocene and Holocene assemblages and distributions reveal disharmonious associations (i.e., the occurrence of presently allopatric taxa that are presumed to be ecologically incompatible), especially in late Pleistocene assemblages.

1 Word - just what is it about allopatric or sympatric speciation that necessitates the extinction of the stem species?

Punctuated equilibrium logically extends from Ernst Mayr's concept of genetic revolutions by allopatric and especially peripatric speciation as observed in the fossil record.

On the other hand, European honeybees (A. mellifera ligustica), which are a related but allopatric species and were introduced to Japan in the Meiji era (about 140 years ago) for apiculture, exhibit only stinging behavior against the hornet.

Its small size is a result of insular dwarfism, a form of allopatric speciation.

Allopatric speciation happens when a geographical change — a river changing course for example or a new mountain range — splits a species in two.

Colin... Allopatric speciation is another argument in the quiver of intelligent design.

which is exactly why the ONLY theory on the table (allopatric speciation) as a research field is an utter backwater.

«you should look up the research on allopatric speciation,» «You'll quickly see (as did Gould), that to believe it just requires a willful suspension of disbelief» Perhaps I'm wrong but wasn't allopatric speciation exactly what Gould was proposing, or at least built upon, for Punctuated Equilibrium?

the bizarre thing about the athiest / naturalistic stance on natural selection / purely random genetic mutation, allopatric speciation and stasis / rapid change is that there is simply no harmony there..

Because neither allopatric nor sympatric speciation require the extinction of the parent species.

«That environmental patchiness seems to have promoted what we call «allopatric speciation.»

There are three main ideas concerning the emergence of new species (Modes of Speciation), each based on the degree to which populations undergoing this process are geographically isolated from one another (allopatric speciation, sympatric speciation, parapatric speciation).

It's purpose is to look at the genetic differences from isolates of similar microbes from across the globe to understand the degree to which populations of microbes are isolated and whether this isolation suggests an allopatric speciation model for prokaryotes.

Allopatric speciation (meaning geographic speciation) is speciation that occurs when biological populations of the same species become separated owing to such geographical events as mountain building or social changes such as migration or emigration.

Allopatric speciation holds that species with large central populations are stabilized by their large volume and the process gene flow.