Animals from completely different branches of the tree of life, such as insects, worms and vertebrates, independently evolved similar genetic solutions to survive on land, according to a new study ...

Evolution doesn't always create brighter colors or larger bodies—sometimes it favors darkness. Through a genetic trait known ...

The ubiquitous and fascinating differences between males and females of many animal species are the developmental outcomes of sex determination in early embryos. In most vertebrates, sex determination ...

The extraordinary variation in male guppy (Poecilia reticulata) colouration is a powerful model for studying the interplay of natural and sexual selection. However, the complexity of this variation ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

Animal social behavior is an extremely complex phenomenon that is shaped by evolution. Animals, whether social bird species or solitary hunters, have an extremely wide range of social behaviours.

In five cases where vertebrates evolved monogamy, the same changes in gene expression occurred each time. In many non-monogamous species, females provide all or most of the offspring care. In ...

An understanding of the origin and dynamics of heritable genetic variation within classical animal breeding programs is needed to provide the context for understanding the contributions and concerns ...

Mammals, for instance, differ dramatically in their maximal lifespans—from the tiny forest shrew, which lives only one or two years, to the bowhead whale, capable of living for more than 200 years.

LONDON (AP) — Scientists searching for the origins of COVID-19 have zeroed in on a short list of animals that possibly helped spread it to people, an effort they hope could allow them to trace the ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. With a growing human population and rising living standards, demand for animal-derived ...