In the xylenase example of directed evolution a three amino acid substitution led to an enzyme that worked better at high temperature. This was accomplished by changing the nuclear DNA, thus epigenetic factors are not involved.
Still waiting for that study, Allmendream. I’m citing all my sources, why can’t you do the same???
==This was accomplished by changing the nuclear DNA, thus epigenetic factors are not involve.
Actually, if you read the sources I provided, epigenetic factors have a way of speeding up rates of mutation, as well as releasing hidden variation that was (apparently) already present.
==Yes, and the means that God used to give organisms the ability to adapt to changing environments is through natural selection of genetic variation
Are you dropping RANDOM MUTATION from your vocabulary now?