| 释义 |
zygotene Cytology.|ˈzaɪgəʊtiːn|
[a. F. zygotène (V. Grégoire 1907, in La Cellule XXIV. 371): see zygo- and -tene.]
The second stage of the prophase of meiosis, following leptotene, during which homologous chromosomes begin to pair.
1911Jrnl. Morphol. XXII. 752 This view..goes on to show that after the last spermatogonial mitosis the chromosomes become very delicate slender threads, the leptotene condition..; these then approximate themselves parallel into pairs making the zygotene condition. 1939[see diakinesis]. 1974Nature 9 Aug. 469/2 At leptotene of meiotic prophase in many organisms, all the telomeres become gathered together and attached to a small area of the nuclear envelope, presumably so as to facilitate pairing during zygotene. |