Sentences with phrase «into isolated populations»

But now DNA found in bones plucked from the permafrost suggests there was a diverse array of immigrants that later broke up into isolated populations.

Not exact matches

The inclusion of isolated population segments into the dominant economy created permanent disruptions in the moral economy of rural life — social upheavals that generated potential recruits for sectarian movements.

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).

Kiessling says reefs may be so prolific because their complexity can support greater variety, more frequent extinctions provide opportunities for new species and their nutrient - poor waters keep populations small and isolated, making them more likely to diverge into new species.

Let's say that a species migrates out of Africa into Europe around 400,000 years ago and becomes reproductively isolated from its ancestral population for the next 320,000 years.

No one really knows how long it would take for an isolated human population to evolve into a separate species.

For species such as the jaguar, which rarely crosses into territory disturbed by humans, survival may hinge on the creation of habitat corridors linking isolated population pockets.

«This study illustrates that there is a lot to be gained in human genetics by looking into small, isolated populations.»

After that heyday, the bears must have been split up into small, isolated populations — genetic bottlenecks — perhaps as they sought refuge on islands and other areas not covered by advancing glaciers during the most recent ice age.

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].

The activity would consist of releasing fertile resistant males in large numbers into (semi --RRB- isolated natural populations.

TVT remained in an isolated population of dogs for most of its history, then something happened that allowed it to move into other dog populations and spread around the world3.

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.

Cattle ranching, agriculture and other human activities are breaking up Costa Rican forests into isolated patchy fragments, but causing more problems for native plant populations than for monkey species sharing the same habitat.

It is believed that this technique could explain why the many seemingly isolated populations of estuarine crocodile have not split into divergent species.

The Protection Acts were intended to have a long - term effect, aimed at integrating the Aboriginal population into the broader population where possible, and isolating those that could not be integrated in accordance with the Acts.