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The average mutation rate among living beings is on the order of one in 100,000 gametes (sperm or egg).

Fortunately (and wonderfully) the typical thermal energy in a living organism is smaller than, but comparable with, the DNA bonding energy.

This is a specific example of the fact that

if any of the three numbers in the Schrodinger equation ---

Planck's constant:  h

the electron's mass:  me

the electron's charge:  e

--- were even slightly different,

our physical world would by profoundly changed!

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