Sentences with phrase «african populations»

According to the filmmakers, despite lions not being on the endangered species list, wild African populations have dwindled from 450,000 to 20,000 in only a matter of 50 years.

The document presents the potential impacts climate change may have on human health and analyses the various direct and indirect impacts that climate change will have on African populations.

The Caribbean marks the starting point of modern Western incursions into this hemisphere, and is the place where indigenous and African populations toiled under and resisted white force, without significant white support.

The African populations, where they had essentially no diverticulosis, ate diets consisting in part of very large platefuls of leafy vegetables — similar, perhaps, to what we were eating a few million years ago.

Compared to rural African populations eating traditional plant - based diets, white South Africans and black and white Americans not only have more than 50 times the heart disease, 10 times more colon cancer, and more than 50 times more gallstones and appendicitis, but also more than 25 times the rates of so - called pressure diseases — diverticulitis, hemorrhoids, varicose veins, and hiatal hernia.

Used as a primary source of protein by ancient Aztec and African populations, this nutrient - packed organism is now making a comeback — and then some — thanks to its convenient, add - to - anything form and unique, powerful blend of vitamins and minerals that together boost energy, remove toxins and could even ward off serious health problems like cancer.

In fact, because of the rich genetic variety in different African populations, the continent has long been subject to mining of genetic samples for pharmaceutical research.

By considering diverse, under - studied African populations, we show how the architecture of skin pigmentation can vary across humans subject to different local evolutionary pressures.

357/12: 00 Transcriptome diversity associated with ancestry and diet in ethnically diverse East African populations.

Background: Waist circumference (WC) thresholds derived from western populations continue to be used in sub-Saharan Africa (SSA) despite increasing evidence of ethnic variation in the association between adiposity and cardiometabolic disease and availability of data from African populations.

The research identified the same variant in East Asian and West African populations, although no human health or lifestyle differences linked to the variant have been detected so far.

The modern human sequences in the Altai Neanderthal appear to derive from a group of modern human ancestors from Africa that separated early from other humans, about the time present - day African populations diverged from one another, around 200,000 years ago.

A common variant associated with prostate cancer in European and African populations Nature Genetics 2006, May 7; [Epub ahead of print].

Other North African populations have varying proportions of this ancestry but it is not yet fully understood how and when it spread across North Africa.»

By comparing the ancient genome to DNA from modern Africans, the team have been able to show that East African populations today have as much as 25 % Eurasian ancestry from this event.

CRGGH continues to use genomic data generated in African populations to refine and fine - map loci identified in European and Asian populations for multiple traits including glucose, uric acid, bilirubin, CRP and serum lipids.

H3Africa Initiative aims to facilitate a contemporary research approach to the study of genomics and environmental determinants of common diseases with the goal of improving the health of African populations.

The study is one of the largest ever of its kind, using over 20,000 samples from eight different African populations.

We observed that East African populations exhibit a much larger degree of genetic diversity than other global groups, which further supports the Out - of - Africa theory (that postulates that modern humans originated in East Africa and migrated out of the continent to populate the world)» says Dr. Koehler.

A main focus of their current work with MalariaGEN is the study of African populations and susceptibility to malaria.

Proportionally more deleterious genetic variation in European than in African populations Lohmueller, K. E., A. R. Indap, S. Schmidt, A. R. Boyko et al. 2008.

Proportionally more deleterious genetic variation in European than in African populations.

Of special interest to HIV vaccine developers are sub-Saharan African populations, who have the largest prevalence of HIV worldwide.

The paper is entitled: «A common variant associated with prostate cancer in European and African populations.»

According to the authors, given the apparent differences between Western and Sub-Saharan African populations, additional studies are required to assess the basis of HIV - 1 disease in Sub-Saharan Africa as well as determine major determinants driving immune activation and inflammation in this population.

What's more, even the modern samples came from only 11 African populations, out of the estimated 50 or so from which slaves were taken, Tishkoff explains.

Poaching of elephants is now occurring at rates that threaten African populations with extinction.

The unreported catch is crippling the artisanal fisheries that help to feed West African populations, he says.

But most African populations show high levels of mixed ancestry, reflecting historic migrations across the continent — such as the movement of Bantu speakers from the highlands of Nigeria and Cameroon across much of eastern and southern Africa in the past 5000 years.

The study found that the GYPB - A Dantu hybrid was present in some people from East Africa, in Kenya, Tanzania and Malawi, but that it was not present in volunteers from West African populations.

The data shows that modern Egyptians share approximately 8 % more ancestry on the nuclear level with Sub-Saharan African populations than with ancient Egyptians.

A comparison of the genomes of present - day southern African populations confirms that our ancestors did not originate from a single group

Although studying genetic diversity in African populations tells us a great deal about human history, there is even more to learn by juxtaposing the genetic diversity with the diversity of heritable traits (phenotypes).

By comparing the ancient genome to DNA from modern Africans, the team have been able to show that not only do East African populations today have as much as 25 % Eurasian ancestry from this event, but that African populations in all corners of the continent — from the far West to the South — have at least 5 % of their genome traceable to the Eurasian migration.

«Populations in Europe appear to have contracted during ice ages whereas African populations have expanded at those times, suggesting that environmental conditions there were more favourable,» says Matthew Webster.

Up to 10 percent of normal individuals carried mutations in the filaggrin gene in these northern nations, in contrast to much lower mutation rates in southern European, Asian and African populations.

We showed this insertion to be adaptive, hence of high frequency, in Indian and some African populations, which are vegetarian.

African populations branch in two directions and then further subdivide around 200,000 years ago.

In the genomes of Latinos — many of whom trace ancestry to European, Native American and African populations — the mixed European, Native American and African sequences form a mosaic of large segments.

«There is no longer any West Eurasian ancestry inferred in West and Central African populations,» says Harvard population geneticist Pontus Skoglund, who alerted Manica to the problem.

«The genome sequence is otherwise beautiful... and the link between Mota and some East African populations [remains] robust.

To identify the genes that give rise to the palette of human skin tones, Crawford et al. applied genome - wide analyses across diverse African populations (see the Perspective by Tang and Barsh).

In many cases, the activity of particular genes was tied to a single genetic variant, with strong differences in frequency between European and African populations.

Genetically and phenotypically diverse African populations are informative for mapping genetic variants associated with skin pigmentation.

Another attention - grabbing submission by prominent geneticists, posted on 23 July, compares genomic variation in 22 African populations to suggest an ancient genetic link between people in southern and eastern Africa1.

The first government - funded human genomics research study performed on African soil — aimed at unlocking the unique genetic character of southern African populations — has revealed a high level of genetic diversity.

African populations harbour the greatest genetic diversity and have the highest per capita health burden, yet they are rarely included in large genome studies of disease association.

The pair concludes that European and Chinese populations both suffered a severe bottleneck between 10,000 and 60,000 years ago, while African populations endured a milder bottleneck at that time (Nature, DOI: 10.1038 / nature10231).

He said this was likely to improve the quality of life of African populations.

A 2011 study showed that the highest rates of twinning were found in Central African populations, with the country of Benin producing the most twins.