In the wild world of animal reproduction, nature has come up with some truly unexpected roles for its creatures. While we ...

In their models, Zipple and co-authors found consistently that in species where offspring survival depends on the longer-term ...

For many species, parents stay with their young for a certain time after birth. The video below shows a heartwarming exchange ...

Six of ten species are found in Papua New Guinea ... Female tree kangaroos give birth to one offspring after a gestation period of approximately 44 days. After birth, the fetus-like young ...

In humans and many other animal species, sex is determined by specific chromosomes. How did researchers discover these so-called sex chromosomes? The path from the initial discovery of sex ...

There are, however, rare examples of asexual species that reproduce by cloning. Each offspring is genetically identical to the parent, with little variation generation after generation.

The most common definition of a species is that a species is a group of organisms that can successfully breed to produce fertile offspring. This is known as the biological species concept. This ...

which gave Teperino a hint to look at these RNA species as first responders to metabolic stress. 1 He and his team administered a short term high fat diet to mice before profiling sperm RNA expression ...