domingo, 10 de noviembre de 2013
Lice Reveal Clues to Human Evolution
GAINESVILLE, FLORIDA— Lice can offer information on human evolution,
according to a study in progress led by David Reed of the Florida
Museum of Natural History. For example, genetic analysis has shown that
the human pubic louse originated from gorilla lice more than three
million years ago. This would suggest that early humans and gorillas
once lived in close proximity. The researchers also found that clothing
lice diverged from head lice between 80,000 and 170,000 years ago,
indicating when humans must have begun wearing clothing of some sort.
And, an investigation of mitochondrial DNA indicates that three lice
lineages may have evolved separately on different hominids, only to be
later reunited on modern humans... Via Archaeology.org
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