Since the Modern Synthesis, evolutionary biologists have assumed that the genetic system
is the sole provider of heritable variation, and that the generation of heritable variation is …

The development of multicellular organisms involves a delicate interplay between genetic
and environmental influences. It is often useful to think of developmental systems as …

The conventional understanding of phenotype is as a derivative of descent with modification
through Darwinian random mutation and natural selection. Recent research has revealed …

Background The year 2009 is the 200 th anniversary of the publication of Jean-Bapteste
Lamarck's Philosophie Zoologique and the 150 th anniversary of Charles Darwin's On the …

Individuals often differ in what they do. This has been recognised since antiquity.
Nevertheless, the ecological and evolutionary significance of such variation is attracting …

Does the inheritance of acquired characteristics play a significant role in evolution? In this
book, Eva Jablonka and Marion J. Lamb attempt to answer that question with an original …

Recent evidence suggests the frequent occurrence of a simple non-Darwinian (but non-
Lamarckian) model for the evolution of adaptive phenotypic traits, here entitled the plasticity …

For evolution by natural selection to occur it is classically admitted that the three ingredients
of variation, difference in fitness and heredity are necessary and sufficient. In this paper, I …

Darwin provided us with a powerful theoretical framework to explain the evolution of living
systems. Natural selection alone, however, has sometimes been seen as insufficient to …

The idea that behaviour has played an important role in evolution has had its ups and
downs over the past two centuries. Now it appears to be up once again. Lamarck can claim …