News tagged with females

Males produce faster sperm for sisters

(Phys.org) —Mating with relatives, or inbreeding, can be costly to both sexes, and in many species males and females avoid mating with siblings.  However, the latest research adds a twist to this story ...

May 07, 2014
4.2 / 5 (6) 1

Females fight back in sperm wars

(Phys.org) —Females exposed to a risk of sperm competition have been found to produce more defensive ova compared to the eggs of females reared under no risk of sperm competition, according to researchers ...

Oct 17, 2013
4.3 / 5 (7) 3 | with audio podcast