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Search Share Forest People. An encounter between Aka pygmies and a woman who is not a pygmy in the Central African Republic in The origins of pygmies have long been a mystery. Researchers have debated whether African pygmies inherited their height from a common ancestor they shared long ago or whether shortness evolved independently in each tribe because it was advantageous for life in the forest.
For instance, getting enough calories to grow taller might have been more challenging than in more open terrain. Pygmies grow up just like other modern humans until they become teenagers, when they fail to undergo a final adolescent growth spurt. Although humans have lived in the forests of Western Central Africa for at least 30, years, there are no fossils to show whether the ancestral population was short to begin with--or whether the trait evolved more recently in different groups.
In the most likely scenario, a small group of short people split off from nonpygmy populations between 50, and 90, years ago. The founding group of pygmy ancestors was fairly cohesive, with tribes interbreeding until years ago.
At that point, taller Bantu-speaking farmers probably swept across central Africa and pushed them apart. Once the pygmy groups split, they stopped interbreeding.
As a result, each group evolved separately.
The study also detected an unusual pattern: More DNA flows from nonpygmy neighbors into pygmy populations than the other way around. This is curious because pygmy women tend to marry nonpygmy men and move to their homes, not vice versa.
But these marriages often fail because of discrimination against low-status pygmy wives, Verdu says, and the pygmy women return to their pygmy groups with children who have DNA from their taller fathers.
The data that the pygmies shared a recent ancestor, however, are convincing, because "they genotyped an impressive number" of pygmies from Western Central Africa, says molecular anthropologist Sarah Tishkoff of the University of Pennsylvania.
Now, says Tishkoff, the next step is to figure out if East African pygmies are also descended from the same ancestral population.A Short History of African Pygmies. By Ann Gibbons Feb. 5, , AM. Short people known as pygmies are scattered across equatorial Africa, where they speak various languages, inhabit.
Free Essay: The Mbuti Pygmies in the Ituri Forest The Mbuti Pygmies in the Ituri forest in central Africa are foragers who use a combination of foraging, net.
Anthropology - Pygmies of Africa, Essay Students will write about a particular culture, which exists today and not in the past. Students will find a culture by choosing from one of the following geographic areas: Africa, Latin America, Asia (East and South), Middle East, Pacific Islands, Papua New Guinea, and Australia (the culture chosen must.
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Essay on The Mbuti Pygmies in the Ituri Forest - The Mbuti Pygmies in the Ituri Forest The Mbuti Pygmies in the Ituri forest in central Africa are foragers who use a .
main groups of Pygmies: the Tswa in the west, the Twa between Lake. Kivu and Lake Tanganyika, and the Mbuti (also referred to as Bambuti. or BaMbuti) of the Ituri Forest. According to Schebesta, the author. of the earliest reliable reports, only the Mbuti are true Pygmies, i.e., under cm.
in height and relatively unmixed with neighboring. peoples.