File:Conklin 1905 fig01-02.jpg

Fig. 1 - 2

Fig. I. Section of an egg of Cynthia partita which had lain twelve hours without being fertilized. The first polar spindle (1 p. -. lies in tin- position in which it was first formed ; the peripheral layer of yellow protoplasm ip. l.i remains uniformly distributed over the surface, hut the clear protoplasm has spread throughout the yolk and broken it up into irregular masses (compare with figs. 77 and 78 showing unfertilized est:s in normal condition).

Fig. II. Stained preparation of an entire egg of Cynthia partita, showing small spindles at opposite poles (1. p. s.i. which are possibly two first maturation spindles, though more probably one of these is a precociously developed sperm spindle.

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Conklin Figures: Fig 1-2 | Fig 3-6 | Fig 7-8 | Fig 9-12 | Fig 13-16 | Fig 17-20 | Fig 21-24 | Fig 25-26 | Fig 27-33 | Fig 34-35 | Plate I | Plate II | Plate III | Plate IV | Plate V | Plate VI | Plate VII | Plate VIII | Plate IX | Plate X | Plate XI | Plate XII

Reference

Conklin EG. The Organization and Cell-Lineage of the Ascidian Egg (1905) J. Acad., Nat. Sci. Phila. 13, 1.

Conklin 1905 TOC: I. The Ovarian Egg | II. Maturation and Fertilization | III. Orientation of Egg and Embryo | IV. Cell-Lineage | V. Later Development | VI. Comparisons with A.mphioxus and Amphibia | VII. The Organization of the Egg | Summary | Literature Cited | Explanation of Figures

Cite this page: Hill, M.A. (2024, April 18) Embryology Conklin 1905 fig01-02.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Conklin_1905_fig01-02.jpg

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