…This reduction in the number of chromosomes by half occurs during the last two cell divisions that produce reproductive cells or spores, and is called meiosis. Cell division consists of two processes: karyokinesis (or mitosis) and cytokinesis. Prior to cell division, the cell replicates its DNA, which is its genes, doubling its genetic information. … *Some of the terminology explanations that mention "nuclear division (cell)" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この染色体数の半減を伴う分裂は生殖細胞または胞子ができる最後の2回の分裂でみられ,とくに減数分裂と呼ばれている。 細胞分裂は核分裂karyokinesis(またはmitosis)と細胞質分裂cytokinesisの二つの過程からなっている。細胞分裂に先立ち細胞は遺伝子であるDNAの複製を行い,遺伝情報を倍加した状態になる。… ※「核分裂(細胞)」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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