There is no theoretical reason to expect evolutionary lineages to increase in complexity with
time, and no empirical evidence that they do so. Nevertheless, eukaryotic cells are more …

Benefits of increased size and functional specialization of cells have repeatedly promoted
the evolution of multicellular organisms from unicellular ancestors. Many requirements for …

Living things are organized in a hierarchy of levels. Genes group together in cells, cells
group together in organisms, and organisms group together in societies. Even different …

During evolution, there have been several major changes in the way that genetic information
is organized and transmitted from one generation to the next. These transitions include the …

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 …

Although evolutionary developmental biology is a new field, its origins lie in the last century;
the search for connections between embryonic development (ontogeny) and evolutionary …

A fundamental problem in biology is the evolutionary transition from single cells to
multicellular life forms,,. During this transition the unit of selection shifts from individual cells …

Cooperation is central to the emergence of multicellular life; however, the means by which
the earliest collectives (groups of cells) maintained integrity in the face of destructive …

A discussion. In the theoretical scheme of evolutionary genetics, development is the function
that maps the genotype to the phenotype. Even at the lowest levels of protein transcription …

Positional information has been suggested to play a central role in pattern formation during
development. The strong version of positional information states that there is a cell …