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As pedinska can (attempt if she will) to explain, there is no such thing as a "public service gene".
If we were purely a product of our DNA, then I would be a successful business person instead of a researcher. Unfortunately for me, in my family if it had been genetic, then it would have been a sex-linked trait. Not being in possession of the required penis, I was relegated to following my own more service-oriented profession while my brother took advantage of the paterfamilial pursuit. ;-}
The princess-industrial toy industry screws girls. That's what its there for, IMHO.
I was never much of a fan of dolls myself and have always given toys to my nieces that encouraged artistic expression and or self-sufficiency. They will also be following in my footsteps in martial arts as well if I have any say.