Abstract

One group in which an early chemodifferentiation brings about determination, as in the ascidians, comprises the invertebrates with spiral cleavage: nemertines, annelids, and molluscs.

Keywords

Nurse Cell Cytoplasmic Streaming Apical Organ Animal Pole Yolk Granule 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1971

Authors and Affiliations

  • Alfred Kühn

There are no affiliations available

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