What:

"Ribosomal RNA is like a rock climber
contorting to maintain contact with a
cliff face. Some of the topography can
change without affecting the operation.
But change a crucial handhold with the
transfer RNA, for example, and the sys-
tem will fall apart. Strong selection over billions of years has maintained those handhold sequences across all forms of life."

Writer: Norman Pace

LCC:

Where:

Date: Feb 23 2014 8:25 PM