sexual reproduction
amphimixis

This period is interesting for the first evidence of sexual reproduction.

At the end of the season, when the weather gets worse, they use sexual reproduction.

It is one of the many variations in sexual reproduction.

What happens is basically the same as sexual reproduction in animals.

This allows continuous culture without the need for sexual reproduction.

Sexual reproduction is a common method of producing a new individual within various species.

Animals may eat so much plant material that they prevent all sexual reproduction within a population.

Although sexual reproduction was suspected, no evidence exists of it.

They also originally were not capable of sexual reproduction but learned to do so on the original Earth.