I can't say because if we just look at our own heritage, we are better versions of our grandfather or mother...maybe not mentally so to speak, but physically. Usually, that is the case but not always. But, you can usually find parents at 5'11 then the kids are 6'3. My dad was 5'7 and was rock hard at 200, my brother was 5'9 and topped out at 215 rock solid in HS...i ballooned at one point to 235 at 5'10 and was rock solidam albeit, not all muscle...My sisters are all 6'0 but my mother was only 5'9. if you look at howards mother, you can see his family has crazy genetics...
This is no lie but a family that live in my old quarters, their whole family looked like men for decades and the females Eventually, the offsprings of those younger sibilings finally started to look the gender (female). Needless to say, the offsprings, fems (who are now early 20') have been blessed with much better facial features and significant better bodies. Honestly, they all look like female fitness athletes...NONE of them work out seriously enough to attain that look and several of them DO NOT TOUCH THE WEIGHTS. So the gene pool can be tricky at times....