News tagged with common ancestor

Related topics: genome

King Tut and half of European men share DNA

According to a group of geneticists in Switzerland from iGENEA, the DNA genealogy center, as many as half of all European men and 70 percent of British men share the same DNA as the Egyptian Pharaoh Tutankhamun, or King Tut.

Aug 03, 2011
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Origin of HIV transmission between males pinpointed

A team of scientists, led by a virologist from the University of California, San Diego's Center for AID Research (CFAR), has discovered the origin of strains of human immunodeficiency virus (HIV) among men who have sex with ...

Feb 10, 2010
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Plague came from China: scientists

The first outbreak of plague occurred in China more than 2,600 years ago before reaching Europe via Central Asia's "Silk Road" trade route, according to a study of the disease's DNA signature.

Nov 01, 2010
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A dead gene comes back to life in humans

( -- Researchers have discovered that a long-defunct gene was resurrected during the course of human evolution. This is believed to be the first evidence of a doomed gene - infection-fighting human IRGM - making ...

Mar 06, 2009
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Common descent

A group of organisms is said to have common descent if they have a common ancestor. In modern biology, it is generally accepted that all living organisms on Earth are descended from a common ancestor or ancestral gene pool.

A theory of universal common descent via an evolutionary process was proposed by Charles Darwin in his book On the Origin of Species (1859), and later in The Descent of Man (1871). This theory is now generally accepted by biologists, and the last universal common ancestor (LUCA or LUA), that is, the most recent common ancestor of all currently living organisms, is believed to have appeared about 3.9 billion years ago. The theory of a common ancestor between all organisms is one of the principles of evolution, although for single cell organisms and viruses, single phylogeny is disputed (see: origin of life).

In his book The Ancestor's Tale, Richard Dawkins uses the word concestor as a substitute for "common ancestor." This new word is very gradually entering scientific parlance.

This text uses material from Wikipedia, licensed under CC BY-SA

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