I have a lot of tall people in my family. How about you?
We range in height.  There is a particular genetic profile in men that is correlated with height.
Oh, is it the same with women?
No, in the male is the Y haplotype I-M170.
My boyfriends family has a bunch of tall women. I wonder if they also have a certain gene.
Perhaps.  As the frequency of the Y haplotype increases the average male height rises, so why not the female height too?
Yes, that is what I am thinking. There has to be something genetic about it.
Oddly, in my family all the girls were short and all the boys were tall!  Height by gender measured from the bottom of our feet to the top of our head.