Nice to see this going around.
Me, Personally, i dont think much genetics is envolved.
My mum and dad are about the same height, both around 5 "4 - 5 "6.
As for me im 5 "10 and am 16 years old, i grew mostly around year 8, and when i was younger i was fairly tall for my age.
My local doctor said i should reach 6 "1 which is what i hope to reach, but well have to see.