Sentences with phrase «arose as a population»

The science (human population genetics) is clear that our species arose as a population, and that is what I have focused on (since that is my area of expertise).

This view accepts that humans share ancestry with all other forms of life, and that our species arose as a population, not through a single primal pair.

Not exact matches

Except in a few small islands in the Pacific, until 1914 the Christian communities which arose from missions from the West were small minorities, Christian enclaves in overwhelming non-Christian populations, dependent on continued infusions from Europe and America and regarded by the non-Christian neighbors as aliens, the religious phase of Western imperialism and colonialism.

As they grow, mutations arise and populations of genetically distinct cells emerge.

If so, and if, as the team's estimates suggest, the variant became established in the human population during the last 200,000 years of human history — roughly the time at which anatomically modern humans arose — the gift of gab may have been a driving force in their expansion.

Our goal for this new program is to provide in - depth and customized education in ethical issues that arise in research conducted with human subjects, such as informed consent, genetics research, and in the study of vulnerable populations.

National Institutes of Health researchers studying zebrafish have determined that a population of cells that protect the brain against diseases and harmful substances are not immune cells, as had previously been thought, but instead likely arise from the lining of the circulatory system.

«It was once believed that effector and memory cells arose as two distinct populations, with some cells initially fated to be effector type and some to be memory,» McDonald said.

Heterogeneity in a bacterial population that arises through a mechanism of biased partitioning of drug efflux pumps, as we identified in our study, could be a stepping - stone on the path of bacterial populations towards antibiotic resistance.»

From these three cell populations different functional tissue cells arise, such as skin cells, muscle cells, and specific organ cells.

Rather, Jobling says, this characteristic could have arisen by mutation in a small founder population and then simply spread as this population migrated to other parts of the world.

This approach is in contrast to the current treatment paradigm where resistant populations are treated as they arise.

As the groups met and mixed, a new population displaying patterns of genetic adaptation to high latitude environments arose.

When mildly negative mutations arise in a species with a large population, such as the trillions of bacterial organisms that can fill a small area, they are quickly cleared out by selective forces.

As disease ravaged the indigenous population and resources became scarce, a series of violent conflicts arose between tribes, settlers, and the government that scarred the continent.

Sept. 28, 2011: Gifted Students Click on E-Learning Our guests discuss how best to serve gifted students in an online learning environment, as well as what challenges may arise for this population of students.

The problem arises when the survey data is used as a sample of the larger population.

The UC Davis VMTH does not stock this vaccine as situations requiring their use do not arise commonly in our hospital population.

Soon the large population growth in India largely changed the intentions of Le Corbusier, however it continued to grow and adapt to the cultural needs of its inhabitants, possibly because no utopias arise as fixed ideas and be part of its strength the fragility of always being on the edge of existence.

This question arises when we see our world as a connected system and how the exercise of consumption or unfettered population growth affects other parts of the system (e.g. your mention of human confiscation of up to 40 % of solar input to photosynthesis must surely be putting extreme pressure on other species).

California has nearly quadrupled in population over the last 50 years but has not doubled its water supply, meaning that current supplies are stretched thin as new people migrate to the area and new water needs arise.

The Act arises from a letter from a group of health physicists who pointed out that the limited understanding of low - dose health risks impairs the nation's decision - making capabilities, whether in responding to radiological events involving large populations such as the 2011 Fukushima accident or in areas such as the rapid increase in radiation - based medical procedures, the cleanup of radioactive contamination from legacy sites and the expansion of civilian nuclear energy.

One of the problems with the EPA's Endangerment TSD is the nearly complete disregard of observed trends in a wide array of measures which by and large show that despite decades of increasing anthropogenic greenhouse gas emissions the U.S. population does not seem to have been adversely affected by any vulnerabilities, risks, and impacts that may have arisen (to the extent that any at all have actually occurred as the result of any human - induced climate changes).

As with the land / ocean bias, a problem arises when our sample contains unrepresentative proportions of different strata from the population, where the strata behave differently from one another.

The temperature spread attributed to reason (ii) arises from suppositions regarding factors such as population growth, fossil - fuel emissions, and economic and technological developments.

Currently, factors such as family history of breast cancer, number of pregnancies and age at first pregnancy are helpful in predicting how often breast cancer will arise in a larger population.

Programs need to develop family engagement strategies that encourage families to participate in their child's learning and promote two - way communication, enabling parents to share with teachers the unique strengths and talents of their child.58 Strategies must also be responsive to family needs, recognizing the increasing diversity of the child population and the specific needs that arise as a result.

Although the «parental alienation syndrome» was only first described in 1985 (Gardner, 1985), the question arises as to whether PAS has always been evident in the divorcing population, but unrecognized, or whether it is a recent phenomenon, perhaps increasing in prevalence.