Yes They do. This benefits genetic diversity which Is essential to the survival of a species. It helps because offspring can be a mix of their mother and their father. Diminishing the possibility of hereditary diseases that run in one of their families.
Actually it depends because at my school if we get hints wrong we get deducted points, though at other schools it might be different. So it depends what your school does.
Hope this helps.
(If it doesn't, I am sooooooooooooooooooooooooooooooooooooooooooooooooo sorry.)
