Document Detail

Three sons of fortune: early embryogenesis, evolution and ecology of nematodes.
MedLine Citation:
PMID:  11536296     Owner:  NLM     Status:  MEDLINE    
Comparative analysis of nematode development has revealed considerable variations in how the fates of embryonic cells are specified. Such early variations seem enigmatic as they do not influence the resultant structure or performance of the emerging animal. Three different nematode species are used to consider why alternative ways to reach the same goal may have been established during evolution and why early steps of embryogenesis are particularly variable. A scenario is sketched with a shift from late to early cell specification, along with an increase in maternal contribution and developmental tempo and a decrease in regulative potential expressing different developmental strategies. Future studies of larger numbers of species are needed to assess the extent of such variations and to understand more fully the underlying mechanisms, rules and driving forces.
E Schierenberg
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  BioEssays : news and reviews in molecular, cellular and developmental biology     Volume:  23     ISSN:  0265-9247     ISO Abbreviation:  Bioessays     Publication Date:  2001 Sep 
Date Detail:
Created Date:  2001-09-05     Completed Date:  2001-10-11     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8510851     Medline TA:  Bioessays     Country:  England    
Other Details:
Languages:  eng     Pagination:  841-7     Citation Subset:  IM    
Copyright Information:
Copyright 2001 John Wiley & Sons, Inc.
Zoologisches Institut, Universität Köln, 50933 Köln, Germany.
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MeSH Terms
Embryo, Nonmammalian / physiology*
Genetic Variation
Nematoda* / classification,  embryology,  genetics

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