Some New Phenomena in Macronuclear Development of Euplotes patella Exconjugants |
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| Authors: | KATSUYUKI SATO |
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| Institution: | Zoological Institute, Faculty of Science. Hiroshima University, Hiroshima 730, Japan |
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| Abstract: | Two new phenomena were observed during macronuclear development in E. patella. During the formation of giant chromosomes, the number of chromosomes decreased while individual chromosomes gradually became longer and thicker. Immediately before macronuclear elongation, ring-like anlagen appeared, which did not contain chromatin at their centers. The course of macronuclear development in Euplotes is reconsidered in light of these findings. |
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| Keywords: | Chromatin chromosomal numbers pyenotic chromatin masses polytene chromosomes macronulear anlagen |
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