Sentences with phrase «with isolated populations»

Famine from abrupt climate shifts has been equally dramatic and even faster, with some isolated populations wiped out entirely on many occasions.

Range The Townsend's big - eared bat occurs throughout the west and is distributed from the southern portion of British Columbia south along the Pacific coast to central Mexico and east into the Great Plains, with isolated populations occurring in the central and eastern United States.

The natural world was a continuum, he concluded, with isolated populations perpetually in the process of becoming species in their own right.

Not exact matches

The effort that is expended in segregating, isolating, and discriminating large segments of the population would be better spent dealing with things like decent education, housing and medical care for ALL.

Economic expansion in this core was associated with two other dominant trends: growth in population (the so - called demographic transition, which both facilitated, and was facilitated by, industrialization) and the geographic inclusion of previously isolated, local, and ethnic sectors of the population into the commercial and industrial labor force.

Your child will be exposed ONLY to children with his particular diagnosis, which means he will be quite isolated from the general population (this is true to some degree even if the school is eager to take your child on «outings» into the community).

In contrast, some languages with large populations of speakers, such as Mandarin, Hindi, and Arabic, are relatively isolated in these networks.

There, «African wildcat populations might be less isolated and thus more susceptible to contact with feral domestic cats,» the researchers contend.

With the aim of studying the history and genetic diversity of the species, analysis was conducted on the genomes of another ten Iberian lynxes from Doñana and Sierra Morena, the only two surviving populations on the Iberian Peninsula, which have been isolated from each other for decades.

Specifically, Toni Gabaldón's group at the Centre for Genomic Regulation in Barcelona has compared the Iberian lynx genome with those of other species, attempting to identify genes that have lost their function because they have remained isolated and the existence of a small population of specimens of this species.

By 35,000 years ago, H. sapiens appears to have had the planet to itself, with the possible exception of an isolated population of H. floresiensis — the «hobbit» people of Southeast Asia — and another newly discovered hominid species in China.

Most scientists believe a small and isolated population in Africa must have been infected with HIV decades or even centuries ago.

As Hudson Pinheiro, a researcher from the Department of Oceanography and Ecology at the Federal University of Espírito Santo in Brazil, explains: «Populations of this new species have been isolated in the archipelago for a long time due to the distance from the coast, and have developed clear differences in comparison with other «sibling» species living on the continental margin.»

Konstanz evolutionary biologists working with Prof. Axel Meyer have now described parallel evolution of two closely related, but geographically isolated populations of cichlid fish in Nicaraguan crater lakes.

Other factors include collisions with automobiles, territorial disputes with other panthers as habitat shrinks, and inbreeding resulting from their isolated population.

I just started working on my Ph.D. in engineering in a town with a very small minority population, and I feel extremely isolated and alone.

«In terms of practical nature conservation, these results signify that in the future it will no longer be sufficient to preserve small, isolated reserves — while these benefit specialized species with a simple genetic structure, the bulk of species that depend on an exchange between local populations will lose out in the medium to long term,» predicts Schmitt, and he adds in closing, «This will lead to a further decline of numerous insect species — with dramatic consequences for entire food webs and ecosystems.»

Certainly possible in Australia where there are large areas of relatively undisturbed forest with plenty of potential prey... there have been consistent sightings in the Blue Mountains area west of Sydney over many decades which suggest that rather than just an isolated zoo escapee or over grown pet there may be a breeding population, which would be a bit of a worry for us bush walkers!

«Environmental changes would have produced a lot more fragmented, mosaic - type ecosystems, where populations of horses with similar demands and adaptations could have evolved isolated from one another, resulting in different species but with a similar appearance,» points Manuel Hernández Fernández at the Complutense Univerity in Madrid.

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.

In 2009, the islands also launched a public effort to identify people afflicted with carnitine transporter deficiency (CTD), a disease that can lead to sudden death in young adults and is a hundred times more common among the isolated Faroese population than elsewhere.

Scientists are concerned that butterflies with small, isolated populations may be in severe peril if their habitats are burned too frequently and in large blocks at a time, which can mean that butterfly refugia — unburned areas that provide refuge — are limited.

The results of our limiting dilution analysis confirmed that the isolated CSCs (CD24 − / CD44 + / ESA +) population has significantly stronger ability of generating tumors compared with non-stem cell population (Table 1).

C, primary breast cancer cells isolated from patients with advanced cancer were directly infected with KLF4 or control lentivirus, and the CSC population (CD24 − CD44 + ESA +) was measured by FACS after culturing the cells for 72 hours in low - attachment plates.

Such plants can be isolated using genome - wide association mapping of diverse populations or can be isolated from forward genetic screens, where a subset sample population with the desired traits is selected from a large pool of mutagenized individuals.

Identify immune cell populations with our flow cytometry antibodies and kits and isolate them with our cell selection kits.

By analyzing these two exomes together with the genome sequence of a Neandertal from Siberia we show that the genetic diversity of Neandertals was lower than that of present - day humans and that the pattern of coding variation suggests that Neandertal populations were small and isolated from one another.

Starting with transplants of human oligodendrocytes in the late 1980s [40], and more recently with populations of human oligodendrocyte progenitor cells isolated from the developing or adult CNS, or from human embryonic stem cells, it has been possible to generate extensive myelination upon transplantation into spinal cord injury or into congenital mouse models of hypomyelination [41]--[48].

deCODE is a global leader in gene discovery — our population approach and resources have enabled us to isolate key genes contributing to major public health challenges from cardiovascular disease to cancer, genes that are providing us with drug targets rooted in the basic biology of disease.

We analyzed whole genome sequences of 1,680 Streptococcus pneumoniae isolates from four independent populations using GWAS and identified probable hotspots of genetic variation which correlate with phenotypes of resistance to essential classes of antibiotics.

Isolated populations with enrichment of variants due to recent population bottlenecks provide a powerful resource for identifying disease - associated genetic variants and genes.

Here we report ∼ 9.5 million variants from whole - genome sequencing (WGS) of a Cretan - isolated population, and show enrichment of rare and low - frequency variants with predicted functional consequences.

Here, we perform a comprehensive investigation using 3,059 newly generated low - depth whole - genome sequences from eight European isolates and two matched general populations, together with published data from the 1000 Genomes Project and UK10K.

In parallel with cell culture, individual cells from each sort population were isolated for RT - PCR analysis.

Throughout his studies of isolated populations on native diets, Price was continually struck by the contrast of native sturdiness and good health with the degeneration found in the local white populace, living off the «displacing foods of modern commerce» such as sugar, white flour, canned foods and condensed milk.

But typically, our student body goes back to the community from which they came — generally the most isolated, underserved areas in New York — working with populations that needs them the most.

As a rural school in Murphy, North Carolina — in Southern Appalachia — we have become acutely aware of the challenges facing our student population: They live in a historically isolated community with little access to cutting - edge, well - paid jobs.

The outcomes of the Isolation of Poverty Index and Isolation of Wealth Index are highly correlated with district FRPL rates because districts with very high or low populations of FRPL - eligible students are much more likely to be economically isolated.

Critics worried that charters would target more advantaged suburban populations, skimming off the students most likely to succeed and leaving traditional public schools in low - income and minority neighborhoods even more isolated, underfunded, and burdened with the toughest student cases.

And finally, in New Haven, where the commissioner portrayed the Amistad Academy as an extraordinary success, the public schools have 86.9 % minority populations while Achievement First's Amistad Academy is far more racially isolated with 98.1 % of students being minority.

Hidden in isolated cottages, protected by the population, they waited with trust and hope, through two interminable winters, for the return of liberty.

We always have a veterinarian on the premises as well as ample staff to monitor our guests at all times.If your dog is too fragile or aggressive to mingle with the general population, we have private rooms and fenced off outdoor areas so that your dog will be separate and safe without feeling isolated.

Just like with people, sometimes pets need to be isolated from the rest of the population because they are sick with a contagious disease or they need to be quarantined before traveling to a foreign country.

However, dog breeds generally are characterized by closed breeding and relatively isolated populations, often with a small number of founders and popular sires whose gene pool is overrepresented in modern - day progeny.

With a population of 6,500 year round residents, Jackson Hole and Teton Valley are quaint and remote, but a far cry from isolated.

They breed strictly amongst their isolated community and at high rates, with no regard to population control.

Different populations could still become isolated with increased risk of extinction over time.

The result is relatively higher adaptation and disaster risk reduction costs per capita in countries with small populations and areas, especially those that are also geographically isolated, have a poor resource base and high transport costs

Setting Helena, Montana, a geographically isolated community with one hospital serving a population of 68 140.

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.