…The first characteristic of the conjugation process is that conjugation occurs between a pair of complementary mating types. In Chlamydomonas, two different types of gametes can be seen at the ultrastructural level, which cannot be distinguished by light microscopy. The gamete that has a mating type structure (MTS) similar to a desmosome near the flagellum and selectively transmits chloroplast genes is defined as (+) type, and the gamete that has a simpler ultrastructural structure than the (+) type gamete is defined as (-) type. In Spirogyra, the gamete that produces the zygote is female, and the gamete that penetrates it is male. … *Some of the terminology that refers to "mating type structure" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…接合過程の第1の特徴として,接合は相補的な1対の接合型の間で起こることが挙げられる。クラミドモナスでは,光学顕微鏡では区別できないが,微細構造レベルでは異なる二つのタイプの配偶子がみられ,鞭毛の近くにデスモソームに似た接合型構造mating type structure(MTS)があって葉緑体遺伝子を選択的に伝播(でんぱ)する配偶子は(+)型,(+)型配偶子より単純な微細構造をもつ配偶子は(-)型と定義される。アオミドロでは,接合子のできる側の配偶子は雌,それに進入するほうの配偶子は雄とされる。… ※「mating type structure」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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