Evolution can perform spectacular makeovers: today's airborne songbirds descended from the wingless, earthbound dinosaurs that roamed millions of years ago, for example. But some organisms seem to ...

FACTORS OF EVOLUTION : THE THEORY OF STABILIZING SELECTION BY II SCHMALHAUSEN TRANSLATED BY ISADORE DORDICK EDITED BY THEODOSIUS DOBZHANSKY WITH A NEW FOREWORD BY DAVID B WAKE ...

Taken together, the analysis painted a picture of how natural selection operated on the community as a whole. To his surprise, Stroud found that the stabilizing form of natural selection -- that which ...

This is a preview. Log in through your library . Abstract We integrate field data and phylogenetic comparative analyses to investigate causes of body size evolution and stasis in an old insect order: ...