File:EB1911 Infusoria - Changes during Conjugation in Ciliata.jpg
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[edit]DescriptionEB1911 Infusoria - Changes during Conjugation in Ciliata.jpg |
English: Diagrammatic Sketch of Changes during Conjugation in Ciliata. (From Hickson after Delage and Maupas.)
1, Two individuals at commencement of conjugation showing meganucleus (dotted) and micronucleus; successive stages of the disintegration of the meganucleus shown in all figures up to 9. 2, 3, First mitotic division of micronuclei. 4, 5, Second ditto. 6, One of the four nuclei resulting from the second division again dividing to form the pairing-nuclei in either mate, while the other 3 nuclei degenerate. 7, Migration of the migratory nuclei. 8, 9, Fusion of the incoming migratory with the stationary nucleus in either mate. 10, Fission of Zygote nucleus into two, the new mega- and micronucleus whose differentiation is shown in 11, 12. The vertical dotted line indicates the separation of the mates. |
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Date | published 1911 | ||||
Source | “Infusoria,” Encyclopædia Britannica (11th ed.), v. 14, 1911, p. 559, fig. iv. | ||||
Author | From Lankester’s Treatise on Zoology | ||||
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current | 16:34, 13 August 2018 | ![]() | 606 × 848 (167 KB) | Bob Burkhardt (talk | contribs) | {{Information |description ={{en|1=Diagrammatic Sketch of Changes during Conjugation in Ciliata. (From Hickson after Delage and Maupas.) 1, Two individuals at commencement of conjugation showing meganucleus (dotted) and micronucleus; successive stages of the disintegration of the meganucleus shown in all figures up to 9. 2, 3, First mitotic division of micronuclei. 4, 5, Second ditto. 6, One of the four nuclei resulting from the second division again dividing to form the pairing-nuclei... |
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