Grandma’s Experiences Leave a Mark on Your Genes:
Your ancestors’ lousy childhoods or excellent adventures might change your personality, bequeathing anxiety or resilience by altering the epigenetic expressions of genes in the brain. - http://discovermagazine.com/2013/may/13-grandmas-experiences-leave-epigenetic-mark-on-your-genes#.Uv4-gbSJveY
Rat pups who receive high or low nurturing from their mothers develop epigenetic differences that affect their response to stress later in life. When the female pups become mothers themselves, the ones that received high quality care become high nurturing mothers. And the ones that received low quality care become low nurturing mothers. - http://learn.genetics.utah.edu/content/epigenetics/inheritance/
None of this explains Sodom and Ghomorah. Abraham challenged God and there were not 10 righteous there...only lot and his family.
I think it was pure, Satanic inspired evil that infested those cities on the plain. God zapped them. It had nothing to do with DNA. It had to do with being a ‘child’ of Satan.