How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: the lines that eventually give rise to segments, organs, or markings like ...
Tempo, mode, the progenote, and the universal root / W. Ford Doolittle and James R. Brown -- Phylogeny from function : the origin of tRNA is in replication, not translation / Nancy Maizels and Alan M.
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