How much does family history in sports influence the kids?

Was chatting with someone on another forum (for baseball) and he was like "what's the highest level you played? do you have anyone in your family that has played college or pro?"

He was saying that genes matter a lot. He said that if I didn't play in college then my kid won't go far. This is a former coach who actually picked his 13u travel ball players based on the height of the dads (no joke).

That got me thinking about who in my family has played what and to what level.

Almost everyone...

How much does family history in sports influence the kids?