NDLI: Chicken or egg—Weismann revisited

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Chicken or egg—Weismann revisited

Content Provider	Paperity
Author	Nick, Peter
Abstract	Multicellularity allows for division of labour. This requires that individual cells adopt different developmental fates. This developmental dichotomy could arise from interactions between the cells, but it could as well be produced by a formative cell division guided by a gradient of developmental determinants within the progenitor cell such that these determinants are differentially partitioned to the daughter cells. It was August Weismann, who, in the attempt to explain inheritance, proposed that the first gonidial division should define the separation of the differentiating, but mortal soma from the non-differentiating, but immortal germ line as a primordial event of multicellular development (Weismann 1894). Although he could not foresee the concept of differential gene expression at this time, the soma-germ line concept has been fruitful to describe early development of the metazoa. Following the Weismann concept, the ultimate cause for cell differentiation and morphogenesis of th ...
Starting Page	729
Ending Page	730
File Format	HTM / HTML
ISSN	0033183X
DOI	10.1007/s00709-014-0656-6
Issue Number	4
Journal	Protoplasma
Volume Number	251
e-ISSN	16156102
Language	English
Publisher	Springer Vienna
Publisher Date	2014-06-17
Access Restriction	Open
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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