Sexual reproduction may be nearly as old as animal life itself, according to researchers who discovered a new species of organism that lived 540 million years ago. The tube-like creatures called ...

Some animals, like Komodo dragons and sharks, were found to reproduce without mating, a process termed parthenogenesis. California condors, stick insects, blind snakes, tardigrades, and some fish have ...

A new study of 565 million-year-old fossils has identified how some of the first complex organisms on Earth -- possibly some of the first animals to exist -- reproduced, revealing the origins of our ...

A new study published in Science and led by Monash University biologists reveals that the energy cost of reproduction is far greater than previously believed. The research, led by Dr. Samuel C Ginther ...

CAMBRIDGE, England, Aug. 3 (UPI) --Statistical analysis has revealed the sexual behavior of creatures from the genus Fractofusus, a type of rangeomorph, was surprisingly complex. In a new study, ...

Analysis of the DNA and proteins of a range of animals has revealed that sperm’s molecular toolkit arose in our single-celled ...

“Reproduction in this way made rangeomorphs highly successful, since they could both colonise new areas and rapidly spread once they got there,” Emily Mitchell, a postdoc at the University of ...

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 ...

Melanie Laird receives funding from The University of Otago. Camilla Whittington receives funding from the Australian Research Council. University of Sydney and University of Otago provide funding as ...

Microsporidia cause diarrhea, an illness called microsporidiosis and even death in immune-compromised individuals. In spite of those widespread medical problems, scientists were uncertain about how ...

IN NATURE of September 29, p. 145, Dr. Orton makes the interesting suggestion that bisexuality in animals may be causally connected with the development of a freely moving, as opposed to the sessile ...