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Further morphological and biochemical studies on normal and hybrid embryos of sea urchins

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Zusammenfassung

(1) Es wurde bei den SeeigelartenParacentrotus ♀♂,Arbacia ♀♂ undSphaerechinus ♀♂ sowie den drei BastardenPar ♀ ×Arb ♂,Arb ♀ ×Par ♂ undPar ♀ ×Sphaer ♂ für eine Reihe von Entwicklungsstadien die Anzahl der Kerne pro Keim bestimmt (Tabelle). Der morphogenetischen Hemmung der Bastarde entsprechen herabgesetzte Kernzahlen und parallel eine Herabsetzung der DNS-Synthese. (2) Es wurde bei den genannten reinen Arten und den Bastarden derUmsatz der RNS bestimmt. Er geht in allen Fällen, bei den reinen Arten wie bei den Bastarden, der DNS- Synthese parallel.

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Authors and Affiliations

  1. Zoologisches Institut der Universität Zürich, Switzerland

    P. S. Chen & F. Baltzer

  2. Zoologisches Institut der Universität Bern, Switzerland

    P. S. Chen & F. Baltzer

Authors
  1. P. S. Chen
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  2. F. Baltzer
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Additional information

Our work was supported by a grant from the ‘Schweizerischer Nationalfonds zur Förderung der wissenschaftlichen Forschung’. We express our sincere thanks to the ‘Nationalfonds’ and also to the authorities at the Zoological Station at Naples for generous help and supply of materials and facilities. — This paper is thankfully dedicated byF. Baltzer toF. E. Lehmann for his kind hospitality in the Bernese Institute.

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Chen, P.S., Baltzer, F. Further morphological and biochemical studies on normal and hybrid embryos of sea urchins. Experientia 20, 236–240 (1964). https://doi.org/10.1007/BF02135426

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