Thus the male would leave his mate and offspring to search for food and return carrying the food in his arms walking on his legs.

He left offspring by both marriages.

And lately he had felt pangs of regret at not having left offspring behind in Ntah.

The researchers said that reproducing at a younger age and smaller size allowed organisms to leave offspring before they were caught or killed.

In polygynous populations, where only a few males leave offspring, there is a much smaller reproducing population than if all viable males were considered.

Within populations animals differ in their success in leaving offspring; they show differential reproductive ability.

Eventually the rarer genes will disappear and the genetic types leaving fewer offspring will become extinct.

"Those individuals who leave the largest number of mature offspring are the fittest" (Kimball, 2010).

In the temperate zone, the normal homozygotes and the heterozygotes will leave most offspring.

Criminals should be sterilized and feeble-minded persons forbidden to leave offspring behind them.