Sexes

The sexes differ, not only in stature and muscular force, but perhaps even more decisively in temperament, and this must early have given rise to a corresponding division of labour.

The clutch of eggs is incubated by both sexes.

Tom and Mary thought their marriage would be more interesting if they both changed sexes.

Contrary to machismo stands feminism, which aims to eliminate the inequality between the sexes.

What unites feminists is the belief that equality of the sexes is necessary, and that none of us will stop until we achieve this.

The slime mold Physarum polycephalum has 720 sexes.

In short it was only after many failures, and after many barren epochs during which, for a variety of reasons, the enterprise was neglected, that the Fourth Men did at length fashion two individuals almost precisely of the type they had originally designed. These were produced from a single fertilized ovum, in laboratory conditions. Identical twins, but of opposite sexes, they became the Adam and Eve of a new and glorious human species, the Fifth Men.

Both sexes defend the nesting site, although most defense is done by the male.

Why people want to change their sexes by cutting off their genitals and not trying to create better legs more suitable for running, thus creating new sub-species?

"Bisexual means two sexes." "Then September must be the seventh month."