Is this true?

Hello, Not solely. Because I have seen many people who are short but the kids are tall. And I have one such example in my friend list only. I think, the kids take their genetic make up from their grandparents too. So, it would not entirely depend on the parents, though you may say that majority of examples you happen to see where if parents are tall kids too are and visa vis. But as I said it is not solely dependent on it. https://www.enotalone.com/health/11399.html http://www.healthguidance.org/entry/14999/1/Factors-Affecting-Childrens-Height.html