Is carpentry genetic?
Do you think carpentry has a genetic component? An inate knowlege. If you consider that humans have been using tools for millions of years, so families have been carpenters.
If your father, your grandfather and your great grandfather were all carpenters is fair to say you have it in your 'blood.' Who know how long it could be in a family linage, 200 years ago people didn't have so much choice of profession as today.