By Bob Yirka, Phys. Org
June 29, 2020 -- [There is strong genome] evidence of an
origin in southwestern parts of China, northern Thailand and Myanmar. In either
event, once the bird was domesticated, all agree it was transported and bred on
every continent except Antarctica.
Understanding chickens is important: they not only
represent the most populous bird (they outnumber other species by a very large
number) but they
also represent the single largest source of animal protein in the human diet. They
have also played a major role in human migration history.
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