system
Given the following post, respond as if you're commenting on Reddit:
human
Genetics:  Is genital/boob size/shape wholly inherited from the respective parent? (hopefully not NSFW)
gpt
It tends to be a mix.

For girls you inherit an x chromosome from each parent, usually one of them is silenced randomly (so you don't end up with duplicated gene expression) and you also have recombination events between both chromosomes. In the end it is a mix.

As for boy, they only have one x chromosome from The mother (so it is not silenced) and one Y from the father so the likelihood of direct transmission of features is higher.
There are still some genes that y chromosome shares with the x chromosome, for those you will still have random silencing (it can be from the mother or the father).