The comparison of gene expression patterns in a number of insect and crustacean species has led to some insight into the evolution of arthropod patterning mechanisms. These studies have revealed the fundamental nature of the parasegment in a number of organisms, shown that segments can be generated sequentially at the molecular level, and suggested that pair-rule pre-patterning might not be shared by all insects.

Keywords:
evolution, segmentation, Drosophila, Manduca, Tribolium, Schistocerca, Acheta, Crustacea, engrailed, even-skipped
This content is only available via PDF.
© 1994.