Meiosis in Several Species of Dioecious Monocotyledoneae I:The possibility of sex-chromosomes

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概要

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• 1. The pre-meiotic spireme in the three species studied appears to exist as a fundamentally continuous spireme and gives rise to the meiotic chromosomes by splitting instead of pairing.2. There is no evidence for a sex-determining apparatus among the chromosomes of said species.3. The haploid numbers have been counted as follows:Dioscorea quaternata (Walt.) Gmel.…….27Smilax glauca Walt.………………….14S. rotundif olia L.…………………164. Meiotic abnormalities in Smilax rotundifolia and Dioscorea quaternata are contrasted with various accepted sex-determining apparatus to show that the latter are not justified as such.

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財団法人 日本メンデル協会 | 論文

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