Classically, nature and nurture have been considered as two very separate factors impacting ...

Answer to q. 1

Methylation provides an interesting combination of nature and nurture. On one hand, methylation is
clearly impacted both positively and negatively by what the individual experiences, making it nurture.
However, those methylation patterns can be passed through multiple generations and impact them,
making it nurture.

Answer to q. 2

If Mendel had picked traits controlled by a pleiotropic gene, he would have found that those traits did
move independently. In that case, the clean segregation observed in his other traits would have been
completely absent.

All correct!