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 ...

VERTEBRATE ZOOLOGY AN INTRODUCTION TO THE COMPARATIVE ANATOMY EMBRYOLOGY AND EVOLUTION OF CHORDATE ANIMALS BY GR DE BEER WITH AN INTRODUCTION BY JULIAN S HUXLEY ...

Annals of Botany, Vol. 118, No. 1, Highlight on Orchid Biology (July 2016), pp. 159-172 (14 pages) Background and Aims Despite their significant capacity to propagate vegetatively, most orchids ...