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- MATSUURA Hajime
- Botanical Institute, Faculty of Science, Hokkaido University
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- TANIFUJI Shigeyuki
- Botanical Institute, Faculty of Science, Hokkaido University
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- IWABUCHI Masaki
- Botanical Institute, Faculty of Science, Hokkaido University
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- KANAZAWA Hajime
- Botanical Institute, Faculty of Science, Hokkaido University
Bibliographic Information
- Other Title
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- 還元分裂における半染色分体組換像の出現について
- カンゲン ブンレツ ニ オケル ハンセンショク ブンタイ クミカエゾウ ノ シュツゲン ニ ツイテ
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Abstract
At first ana-telophase and second ana-telophase in the PMC's of Trillium kamtschaticum Pall. which were irradiated with X-rays at various stages from diplotene (presumed) to first metaphase, the diagnostic configurations of half-chromatid recombination, viz., 2-side-arm bridges were frequently observed. So far as the PMC's irradiated at stages from mid-prophase to first metaphase are concerned, the earlier is the meiotic stage of the cells, the lower is the frequency of 2-side-arm bridges resulted.<br>Almost all of 2-side-arm bridges are supposed to be brought about from exchange or union between two non-sister half-chromatids of two associated chromatids, whose possibility is suggested from spatial relationship of the four chromatid threads in a bivalent at late prophase and first metaphase.<br>The present findings indicating that the occurrence of 2-side-arm bridges is so frequent regardless of the number and position of interstitial chiasmata may well be explained on the basis of Matsuura's Neo-two plane theory, that is, free two-by-two disjunction of the four sister kinetochores of a bivalent at anaphase after free opening-out of the chromatids at diplotene.
Journal
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- The Japanese Journal of Genetics
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The Japanese Journal of Genetics 37 (4), 348-356, 1962
The Genetics Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205443535360
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- NII Article ID
- 130000057067
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- NII Book ID
- AA00690924
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- ISSN
- 18805787
- 0021504X
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- NDL BIB ID
- 8994031
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed