Sentences with phrase «populations adapt to their environments»

PROVIDENCE, R.I. [Brown University]-- Researchers from Brown University have developed a new method for sifting through genomic data in search of genetic variants that have helped populations adapt to their environments.

Researchers from Brown University have developed a new method for sifting through genomic data in search of genetic variants that have helped populations adapt to their environments.

Not exact matches

All the theory of evolution says is that life forms adapt to changes in the environment over time; that there are global changes in the gene pool of a given population of animals over time.

It is a process which explains how plant and animal populations genetically adapt to ever - changing environments.

Natural selection affords a measure of stability and durability, for those populations which happen to be best adapted to their environments continue to survive as other populations tend to die out.

«This is indeed suggestive of a sustained regional population which had successfully adapted to the temperate environments of the southern Caucasus,» explains Wil Roebroeks, an archaeologist at Leiden University in the Netherlands.

For instance: as the common house mosquito adapted to the environment of the underground railway system in London, it established a subterranean population.

Researchers analyzed the genetic diversity in the global wheat populations to test if the VRN - D4 gene helped the wheat varieties grown in South Asia adapt to the region's climate and environment.

But especially in such a rare coral species, a tiny boost of a few new individuals could make a big difference in their genetic diversity, allowing their populations to adapt and become more resilient to the changing environment in the oceans.»

He postulates that as populations migrate and dietary patterns become globalized, people with mtDNA optimized to one environment, where they eat a sub-Saharan African diet, may not be well adapted to another environment, where they may consume a Central European diet.

Just as natural selection works on living populations to ensure that the organisms best adapted to their environment survive and reproduce, genetic algorithms winnow out the «unfit» solutions and refine the ones that best match performance requirements.

Populations that expand into a marginal environmental space, Wallace argues, adapt their physiology through mtDNA mutation to better exploit the limited food sources and other resources in that environment.

«Rather than have the populations that live in the indigenous areas adopt foreign technologies that are not well adapted to the environment,» Heckenberger suggests, «why not use some of these homegrown technologies that were used for a very, very long time in the Amazon basin?»

At the same time, these corn populations might have a reduced ability to contribute to breeding programs that seek to create new varieties adapted to novel environments.

The yeast populations that became best adapted to their environment were the sexual yeasts that underwent complete gene mixing.

In the distant past, populations of Mexican tetra ended up in underwater caves, a new environment to which the fish adapted by losing their eyesight.

Natural selection therefore works to create a population that is highly suited to its environment, and can adapt to changes.

Although many other developments and technologies have come along to help us reproduce almost like rabbits, Laland argues that «if it were the case that humans were adapted to environments in the Pleistocene [epoch ending more than 10,000 years ago] but not the Holocene [modern era, which followed], you would expect human populations would have shrunk when they moved into urban environments.»

And although there is no direct evidence — like cut marks on monkey bones or monkey bones found in trash heaps — of humans hunting the monkeys for food, Cooke says that in addition to hunting, the clearing of land for farming and the introduction of invasive species can all put a deadly strain on native island populations, which are adapted to a very specific environment and have nowhere else to go.

The key finding, he said, «illustrates how unisexual reproduction introduces limited genetic diversity in clonal populations already well adapted to an environment, which may drive outbreaks of drug resistant pathogenic microbes.»

«Continued investigations of ancient Asian populations will reveal how our ancestors adapted to the overwhelmingly diverse environments found in eastern Eurasia.»

Scientists know that sex allows genes to mix, allowing populations to quickly evolve and adapt to changing environments, including rapidly evolving parasites.

It holds that natural mutations within a population of organisms will create some new forms that are better adapted to their environment.

In Kelley's lab at Washington State University, research focuses on genetic changes as populations diverge and adapt to the (sometimes extreme) environments they encounter.

When populations are separated from each other, random variation will naturally cause them to drift apart genetically, even if they aren't adapting to anything in their environments.

Center: A population of organisms that have adapted to local conditions in the environment.

«Mounds that are better adapted to local environments will, as a rule, have more offspring; thus, improved building rules that are genetically encoded will spread over time through a population.»

Because Nigerian, European, and Chinese / Japanese populations separated roughly 100,000 years ago and subsequently adapted to different environments, frequent selective sweeps would be expected to fix clear genetic differences between the populations.

We manipulated DNA methylation and histone acetylation in the unicellular green alga Chlamydomonas reinhardtii both genetically and chemically to change the amount of epigenetic variation generated or transmitted in adapting populations in three different environments (salt stress, phosphate starvation, and high CO2) for two hundred asexual generations.

«We have made great progress, but we will need to adapt our program to a changing environment if we are to continue feeding a growing world population.

For papers identifying locally adapted loci from SNP data in wild populations, the proportion of SNPs tested that were local adaptation candidates based on either (a) FST outlier status or (b) significant genotype - environment associations, in comparison to the log - scaled number of individuals sampled in the reported dataset.

Chamovitz says that in our modern environment — with its global warming, changes in precipitation, and shifting populations — we need to learn from plants about how they respond to their environment and then adapt.

It was much easier to adapt to changing environment when world population was low.

«People are not actively managing these populations, but because species in this environment are adapted to human disturbance, endemic species do better as a result of human interaction.

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