红背蝾螈（Plethodon cinereus）雄性减数分裂的时间进程。
The time course of male meiosis in the red-backed salamander, Plethodon cinereus.
作者信息
Morgan G T
出版信息
J Cell Sci. 1979 Aug;38:345-56. doi: 10.1242/jcs.38.1.345.
Tritiated-thymidine autoradiography was used to follow the progress of cells through meiosis in male P. cinereus at 20 degrees C. Spermatocytes spend 7 days in leptotene, 5 days in zygotene and 3 days in pachytene before entering the diffuse stage. Diffuse lasts for 8 days and is followed by a diplotene of 2 days. First and second meiotic metaphase occur a total of 26 days after the end of premeiotic S. Considering the information for P. cinereus together with that for 3 other species, it appears that in amphibians the duration of meiosis does not show the linear relation with C-value that has been described for other groups of organisms.
利用氚标记胸腺嘧啶核苷放射自显影技术，追踪了20摄氏度下雄性灰林蛙减数分裂过程中细胞的进展情况。精母细胞在细线期持续7天，偶线期持续5天，粗线期持续3天，之后进入弥散期。弥散期持续8天，随后是2天的双线期。减数第一次和第二次分裂中期在减数分裂前S期结束后共26天出现。综合灰林蛙以及其他3个物种的信息来看，两栖动物减数分裂的持续时间与C值之间似乎不存在已在其他生物类群中描述过的线性关系。
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