And those that did have these "favorable" mutations survived longer after Advexin treatment:

Three other favorable mutations showed up after the original combinations; all of them are conserved in you.

The radioactivity of this planet must cause plenty of mutations-and the favorable, survival mutation was now one that was deadly to man.

I was just wondering: do you suppose you could cause a favorable mutation in something by planting a dead Spaniard under it?

Mutations that make organisms more adapted to their environment increase in the population through natural selection as organisms with favorable mutations have more offspring.

This ability may have resulted from a favorable mutation or from an adaptation of skills evolved for other purposes.

And rare variants may end up being common in a population due to positive selection for a favorable mutation.

Natural selection, operating on these small discrete changes, will select out favorable mutations, as Darwin hoped.

You are the only zygote in the line which combines every one of the favorable mutations with which my predecessors started.

Call it a favorable mutation.