[名词解释] zygotene stage (偶线期)

diakinesis (终变期) diplotene stage (双线期) pachytene stage, pachynema (粗线期) Sporic or intermediate meiosis（孢子或中间减数分裂） Zygotic or initial meiosis（合子或起始减数分裂） zygotene stage (偶线期)