File:Frog egg gray crescent.jpg

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Description Cortical localisation of dorsal lip region in frog's egg shown by forced rotation of the egg. Thick line, original plane of symmetry ; chain line, new plane of symmetry, passing through centre of grey crescent region (stippled) and mass of yolk which has streamed down to lower pole by gravity. (From Weigmann, Zeitschr. f. Wiss. ZooL cxxix, 1927.)
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Source https://www.flickr.com/photos/internetarchivebookimages/21241301012 The elements of experimental embryology. New York [Hafner Pub. Co.]
Author Huxley, Julian, De Beer, Gavin, Sir.

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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/21241301012. It was reviewed on 2024-03-14 22:05:33 by FlickreviewR 2, who found it to be licensed under the terms of the cc-zero, which is compatible with the Commons. It is, however, not the same license as given above, and it is unknown whether that license ever was valid.

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current22:02, 14 March 2024Thumbnail for version as of 22:02, 14 March 20241,060 × 816 (133 KB)Rasbak (talk | contribs){{Information |description=Cortical localisation of dorsal lip region in frog's egg shown by forced rotation of the egg. Thick line, original plane of symmetry ; chain line, new plane of symmetry, passing through centre of grey crescent region (stippled) and mass of yolk which has streamed down to lower pole by gravity. (From Weigmann, Zeitschr. f. Wiss. ZooL cxxix, 1927.) |date=1963 |source=https://www.flickr.com/photos/internetarchivebookimages/21241301012 The elements of experimental embry...

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