No, Arinmon. She is not in any way right. Removing wisdom teeth will not remove the genes that cause people to have wisdom teeth, which will still be passed on to the children, causing them to have them. The only way they could be bred out would be if the genes were removed (by mutation, or possibly via genetic modification). Think through what you're saying. Simplest explanation: Genes are the blueprints. Destroying a house doesn't destroy the blueprints you followed to build it.

Arinmon, all you need to look at to disprove your theory is the Jewish tradition of circumcision. For thousands of years little boys have had their foreskins cut off when they are a few days old, and for thousands of years little Jewish baby boys are born with intact foreskins. Same with the Chinese tradition of foot binding, that went on for over a thousand years as well.

The only thing that has some sort of influence on having wisdom teeth is a permanent change of diet. It is true though that less and less people are actually having wisdom teeth, but not because their ancestors had them removed ^^