期刊
SCIENCE
卷 331, 期 6020, 页码 1032-1035出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1188545
关键词
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资金
- U.S. National Science Foundation [EF 034939, IOS 0845641, DEB 0816661]
- Hellman Faculty
- Direct For Biological Sciences [0845641] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems [0845641] Funding Source: National Science Foundation
Understanding the diversification of phenotypes through time-descent with modification-has been the focus of evolutionary biology for 150 years. If, contrary to expectations, similarity evolves in unrelated taxa, researchers are guided to uncover the genetic and developmental mechanisms responsible. Similar phenotypes may be retained from common ancestry (homology), but a phylogenetic context may instead reveal that they are independently derived, due to convergence or parallel evolution, or less likely, that they experienced reversal. Such examples of homoplasy present opportunities to discover the foundations of morphological traits. A common underlying mechanism may exist, and components may have been redeployed in a way that produces the same phenotype. New, robust phylogenetic hypotheses and molecular, genomic, and developmental techniques enable integrated exploration of the mechanisms by which similarity arises.
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