Sentences with phrase «genetically isolated population»

Not exact matches

As this resource becomes less permanent due to warming, wolverine populations may become physically and genetically isolated — leading to decline of the species

The work also underscores a relatively new way to uncover a single factor's influence on disease: by isolating it genetically in a large population.

The genetic data indicates that the Ashkenazi Jewish population was founded in the late medieval times by a small number, effectively only hundreds of individuals, whose descendants expanded rapidly while remaining mostly isolated genetically.

But there is a possible upside for condor conservation in the results of this study — D'Elia and his colleagues did not find any evidence that the now - vanished Pacific Northwest population was genetically isolated from the condors in California.

They found that almost all the samples were genetically similar, suggesting the cave bear population was small, isolated and therefore vulnerable.

In addition, the team found that H. pylori populations become more isolated as they move farther from East Africa, differing less genetically within the population, but more compared with East African populationsa finding that also held for human DNA.

Lindqvist says that the analysis reveals that polar bear DNA has lost diversity as populations have dwindled, drifted apart and become genetically isolated, suggesting today's bears have less resilience to the environmental change, habitat loss, pollution and diseases they now face.

Our DNA analysis of samples like these, many collected by colleague Steve Santhuff, has revealed that most river systems from Florida to Texas hold genetically unique populations, isolated for tens of thousands of years.

But sage grouse «leks,» or mating grounds, are becoming less and less lively as habitat dwindles and numbers decline — especially in the Mono Basin area, where an isolated, genetically distinct population is holding on by a thread.

While isolated colonies of laboratory animals are susceptible to becoming less genetically diverse, Brekke et al.'s findings suggest that diversity is maintained across many different populations.

In contrast, smaller isolated populations are genetically decoupled from the mitigating effects of gene flow can rapidly radiate.

«Regardless of whether scenario one or two is correct, there was a single population of ancestral Native Americans, and they at least migrated to an area where they were genetically isolated from ancestral East Asians and ancestral North Eurasians,» Potter said.

Their long - term research project confirms that the bottlenose - dolphin population is scattered across the Mediterranean, with decreased migration resulting in local populations becoming genetically isolated.