Humans do not have tails, but do we have “what it takes” for a tail? Hens don’t have teeth, but they have the genes for it. With atavism, it is as if our genomes serve as archives of our evolutionary ...

All vertebrate embryos follow a common developmental path due to their common ancestry. All have a set of very similar genes (the homeobox genes) that define their basic body plan. As they grow, the ...

https://doi.org/10.1641/b580515 • https://www.jstor.org/stable/10.1641/b580515 Copy URL A Abzhanov, WP Kuo, C Hartmann, BR Grant, PR Grant, CJ Tabin. 2006.. The ...

Includes Malpighi's De formatione pulli in ovo (On the formation of the chick in the egg), v. 2, p. [932]-981; and his Appendix repetitas auctasque de ovo incubato observationes continens (Repeated ...

Understanding the evolution of insect mating behavior is essential for explaining how early insects adapted to life on land.

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...