Parthenogenesis, a form of asexual reproduction in which an egg develops in the absence of fertilisation, has traditionally been associated with invertebrates. However, recent discoveries have ...

The study revealed unexpected and sex-specific effects of germline regulation on longevity and somatic repair in vertebrates. Contrary to classical evolutionary theories, it turns out that changing ...

Editor's Note: This article first appeared at The Conversation. We humans use the euphemism for sex that “we like to get a leg over” but the first jawed vertebrates – the placoderms – they liked to ...

Researchers have identified the first reproductive hormone of the hagfish -- a gonadatropin -- representing a significant step toward unraveling the mystery of hagfish reproduction. At 500 million ...

A recent analysis of placoderm fossils — an early jawed vertebrate — shows that the animal kingdom’s first genital organ was a “clasper” that evolved from an extra set of legs, and that the first ...

This is a preview. Log in through your library . Abstract A synopsis is provided of different expressions of whole-animal vertebrate clonality (asexual organismal-level reproduction), both in the ...

A global analysis of zoo records and published studies reveals that blocking reproduction through contraception or ...

What really came first -- the chicken or the egg? Birds' reproductive biology is dramatically different from that of any other living vertebrates, and scientists have long wondered how and when the ...