A recent study reveals that people who are highly open to new experiences tend to have fewer children. Scientists attribute this to delayed parenthood, shorter romantic relationships, and a lower ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Scientists have recorded same-sex behavior across many animal groups, including mammals, birds, and reptiles. Still, the meaning of that behavior depends on the species and the context. Behavior that ...

Scientists uncover how genetic factors influence reproductive timing, aging, and health, shedding light on fertility trends and their impact on future generations. Study: Genetics of female and male ...

Pt. I. Evolutionary history -- Tetrapod relationships and evolutionary systematics -- Anatomy of amphibians and reptiles -- Evolution of ancient and modern amphibians and reptiles -- pt. II.

"This Springer imprint is published by Springer Nature"--Title page verso. BIRDS copy has bookplate: Smithsonian Institution Libraries, Nada Kramar Endowment Income Fund. Avian primordial germ cells / ...