Arthropods: Developmental Diversity within a (Super) Phylum

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 dif...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS Vol. 97; no. 9; pp. 4438 - 4441
Main Author: Akam, Michael
Format: Journal Article
Language:English
Published: United States National Academy of Sciences of the United States of America 25-04-2000
National Acad Sciences
National Academy of Sciences
The National Academy of Sciences
Series:Special Feature
Subjects:
Animals
Appendages
Arthropods
Arthropods - classification
Arthropods - genetics
Arthropods - growth & development
Biological Evolution
Body Patterning
Crustacea
Crustaceans
Evolution
Exoskeletons
Fossils
Gene expression
Genes
Genes, Homeobox
Genetic Variation
Hox gene
Hox protein
Insect genetics
Insect morphology
Insecta
Invertebrates
Mandible
Molecular biology
Perspectives
Zoology
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Description
Summary: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.
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E-mail: m.akam@zoo.cam.ac.uk.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.97.9.4438