dad in front of a wedding cake, date unknown, 2022
Fraternal Birth Order (FBO) effect, also referred to as the older brother effect, demonstrates that the probability of a boy growing up to be homosexual increases for each older brother born to the same mother.
Fraternal Birth Order (FBO) effect, also referred to as the older brother effect, demonstrates that the probability of a boy growing up to be homosexual increases for each older brother born to the same mother.
man always stands at the front.
