An introduction to the study of heredity / by E.W. Macbride.

  • MacBride, E. W. (Ernest William), 1866-1940.
Date:
[1924]
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: An introduction to the study of heredity / by E.W. Macbride. Source: Wellcome Collection.

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    successive divisions of a mother cell, but whereas in the formation of microspores all Illustrating the germination of the two kinds of spores of the water-fern (Salvinia). A. The germination of the microspore. 1. The spermatozoids in the vestigial antheridium. 2. The burst microspore. B. The germina tion of the macrospore. 1. The burst macrospore. 2. The vestigial prothallium. 3. The archegonium. 4. The egg-cell in the archegonium. 7. The wall of the burst macrosporangium. four sisters become spores, in the case of the macrospores only one of the four becomes a