Sexual reproduction is the production of a new organism from two parents by making use of their sex cells or gametes. The humans, fish, frogs, cats and dogs, all reproduce by the method of sexual ...

This is a preview. Log in through your library . Abstract 1. We report age-specific survivorship of founding kings and queens and colony age of first production of fertile progeny (alates) of two ...

Many mammal populations in European and North American zoos are aging – a trend that jeopardizes the long-term viability of so-called reserve populations and, with it, a core mission of modern zoos in ...