Almost every animal lineage is characterized by unique sex-specific traits, implying that such
traits are gained and lost frequently in evolution. However, the genetic mechanisms …

The diversity of animal and plant forms is shaped by nested evolutionary innovations.
Understanding the genetic and molecular changes responsible for these innovations is …

The ability of a single genome to produce distinct and often dramatically different male and
female forms is one of the wonders of animal development. In Drosophila melanogaster …

An important question in evolutionary biology is whether (and in what ways) genotype–
phenotype (GP) map biases can influence evolutionary trajectories. Untangling the relative …

In spite of the diversity of possible biological forms observed in nature, a limited range of
morphospace is frequently occupied for a given trait. Several mechanisms have been …

How did the zebra really get its stripes, and the giraffe its long neck? What is the science
behind camel humps, leopard spots, and other animal oddities? Such questions have …

The origin of new morphological structures requires the establishment of new genetic
regulatory circuits to control their development, from initial specification to terminal …

Drosophila males use leg gustatory bristles to discriminate between male and female
cuticular pheromones as an important part of courtship behavior. In Drosophila …

On macroevolutionary time scales, the same genes can regulate the development of
homologous structures through strikingly different cellular processes. Comparing the …

An important question in evolutionary biology is whether and in what ways genotype-
phenotype (GP) map biases can influence evolutionary trajectories. Untangling the relative …