Article
Rewiring the keyboard: evolvability of the genetic code.
Nature reviews. Genetics - 1 Jan 2001
Knight R D, Freeland S J, Landweber L F
Abstract excerpt
The genetic code evolved in two distinct phases. First, the 'canonical' code emerged before the last universal ancestor; subsequently, this code diverged in numerous nuclear and organelle lineages. Here, we examine the distribution and causes of these secondary deviations from the canonical genetic code. The majority of non-standard codes arise from alterations in the tRNA, with most occurring by...
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