The females of various species view a male that has had sex as "veted" by another female ( who didn't get killed or birth degenerate offspring ) and thus proper breeding material.
Males have no incentive to adopt such standart for females, and they don't. They have other standarts, such as those rising the likelyhood the children will be from them.
The females of various species view a male that has had sex as "veted" by another female ( who didn't get killed or birth degenerate offspring ) and thus proper breeding material.
Males have no incentive to adopt such standart for females, and they don't. They have other standarts, such as those rising the likelyhood the children will be from them.