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 ...

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 ...

Asexual reproduction, in which females reproduce without males by cloning themselves, has been documented in multiple species ...

What really did come first--the chicken or the egg? Birds' reproductive biology is dramatically different from that of any other living vertebrates, and ornithologists and paleontologists have long ...

Some recent studies of the evolution of sexual behavior / N. Tinbergen -- The evolutionary importance of sexual processes and of sexual behavior / W.E. Caspari -- Coaction of genetical and ...

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 ...

Asexual reproduction is common for animals like starfish, deep-sea worms, and stick insects, but among vertebrates, it’s a rarity. A process called parthenogenesis allows some female animals to ...

Survival rates, causes of mortality, and reproduction in the American marten (Martes americana) were determined in northeastern Oregon from 1994 until 1997 with radiocollared martens. The probability ...

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 ...