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Amoeba gives clues to animal origins: single-celled life had molecular tools for going multicellular.
Scaling up from one cell to many may have been a small step rather than a giant leap for early life. A single-celled organism closely related to animals controls its life cycle using a molecular toolkit much like the one animals use to give their cells different roles, scientists report online October 13 in Developmental Cell.
"Animals are regarded as this very special branch, as in, there had to be so many innovations to be an animal," says David Booth, a biologist at the University...
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