Arthropods: developmental diversity within a (super) phylum.
The expression patterns of developmental genes provide new markers that address the homology of body parts and provide clues as to how body plans have evolved. Such markers support the idea that insect wings evolved from limbs but refute the idea that insect and crustacean jaws are fundamentally different in structure. They also confirm that arthropod tagmosis reflects underlying patterns of Hox gene regulation but they do not yet resolve to what extent Hox expression domains may serve to define segment homologies.
Akam
M
M
Laboratory for Development and Evolution, University Museum of Zoology, Department of Zoology, Downing Street, Cambridge, CB2 3EJ, United Kingdom. m.akam@zoo.cam.ac.uk
D000818:Animals; D001181:Arthropods / Q000145:classification* / Q000235:genetics* / Q000254:growth & development; D005075:Biological Evolution; D019521:Body Patterning; D005580:Fossils; D005801:Genes, Homeobox; D014644:Genetic Variation