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Science 2 October 1987:
Vol. 238. no. 4823, pp. 42 - 48
DOI: 10.1126/science.238.4823.42
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Articles

Multidimensional Analysis of an Evolving Lineage

DAVID B. WAKE 1 and ALLAN LARSON 2

1 Professor in the Department of Zoology and director of the Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720.
2 Assistant professor in the Department of Biology, Washington University, St. Louis, MO 63130.

To identify the forces directing organismal evolution, a general analytical system is developed to synthesize structuralist and Darwinian traditions in an explicitly historical framework. Morphological features of lungless salamanders are examined to identify hierarchical systems of developmental and functional constraint on evolution and their interactions with processes at the genic and populational levels. Characteristic patterns of change occur repeatedly in the evolutionary history of this group.


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