, Volume 25, Issue 1, pp 427–434 | Cite as

Redox polarity of the amphibian egg and its relationship to the bioelectric polarity of the egg

  • W. A. Dorfman


  1. 1.

    A polar distribution of loci with different aerobic reduction potentials has been shown to exist in the unfertilized egg of the frog,Rana temporaria.

  2. 2.

    A similar distribution of loci with different pH-values has also been established in the egg by means of the electrometric method.

  3. 3.

    The more alkaline animal hemisphere shows a more negative reduction-potential than the more acid vegetative one though the rH2-values at both the poles practically coincide (rH2=approx. 20).

  4. 4.

    The oxidation-reduction polarity of the egg is, therefore, opposite in sign to that found previously in bioelectric experiments. This is to be regarded as an experimental evidence against some views which try to identify both kinds of potentials.



Experimental Evidence Reduction Potential Similar Distribution Polar Distribution Rana Temporaria 
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Copyright information

© Verlag von Gebrüder Borntraeger 1936

Authors and Affiliations

  • W. A. Dorfman
    • 1
  1. 1.Physico-Chemical Department of the Biochemical A. Bach InstituteUSA

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