Asexual conundrums Parthenogenetic species are rare but found among a variety of life, including reptiles, amphibians, ...

For years scientists have known that some species of sharks, fish and lizards are capable of "virgin births," asexual reproduction known as parthenogenesis that occurs when unfertilized eggs develop.

For vertebrates, asexual reproduction, or parthenogenesis, is rare but hardly novel. It is seen in some species of fish and reptiles, and scientists believe it can be a response to isolation from ...

(Mutations do create a minor amount of change.) If asexual reproduction survives at all, conditions must sometimes favor it, even in competition for a niche with sexually reproducing species.

Asexual reproduction is common among plants and insects. It is rarer among vertebrates. No mammals, as far as we know, do it in the wild. Yet a growing list of bird, shark, lizard and snake ...

Those outlier liaisons gave whiptails robust heterozygosity, which has been preserved by the identical replication—essentially, cloning—that occurs in asexual reproduction. It’s a genetic ...

But genetic testing showed that the babies only carried DNA from their mum, indicating they had been conceived via asexual reproduction. Some vertebrate species have the ability to reproduce ...

Take the evolution of sex, for instance. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction ...

Save guides, add subjects and pick up where you left off with your BBC account. The questions in this quiz are suitable for GCSE biology students studying asexual reproduction, sexual reproduction ...