期刊
WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY
卷 1, 期 3, 页码 345-369出版社
WILEY
DOI: 10.1002/wdev.23
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资金
- NIH [1R15HD059070-01]
- NSF [IOS-0841720]
- Pontificia Universidad Catolica del Ecuador
- Academy of Sciences for the Developing World (TWAS) [07-017 LDC/BIO/LA-UNESCO FR 3240144821]
The current model amphibian, Xenopus laevis, develops rapidly in water to a tadpole which metamorphoses into a frog. Many amphibians deviate from the X. laevis developmental pattern. Among other adaptations, their embryos develop in foam nests on land or in pouches on their mother's back or on a leaf guarded by a parent. The diversity of developmental patterns includes multinucleated oogenesis, lack of RNA localization, huge non-pigmented eggs, and asynchronous, irregular early cleavages. Variations in patterns of gastrulation highlight the modularity of this critical developmental period. Many species have eliminated the larva or tadpole and directly develop to the adult. The wealth of developmental diversity among amphibians coupled with the wealth of mechanistic information from X. laevis permit comparisons that provide deeper insights into developmental processes. (C) 2011 Wiley Periodicals, Inc.
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