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 ...

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 ...

WASHINGTON — An all-female freshwater fish species called the Amazon molly that inhabits rivers and creeks along the Texas-Mexico border is living proof that sexual reproduction may be vastly ...

LONDON (Reuters) - Sex has been a fact of life for at least 380 million years, longer than previously thought. Internal fertilization was widespread among prehistoric fish living on ancient tropical ...

WASHINGTON (Reuters) - An all-female freshwater fish species called the Amazon molly that inhabits rivers and creeks along the Texas-Mexico border is living proof that sexual reproduction may be ...

image: An international team of scientists has sequenced the genome of the Amazon molly, a fish that reproduces asexually. The researchers expected that the asexual organism would be at a genetic ...

Who needs men? A female shark separated from her long-term mate has developed the ability to have babies on her own. Leonie the zebra shark (Stegostoma fasciatum) met her male partner at an aquarium ...

This is a preview. Log in through your library . Abstract Age-specific survival and reproduction are closely linked to fitness and therefore subject to strong selection that typically limits their ...