n.二數(shù)；一對；二元一位

As a result, dyad spores formed. 結(jié)果形成二分體孢子。

Status Offline What the Hell's a Naiad Dyad? 到底什么是“水中仙女二元體”？

The dyad formed in Meiosis I was wrapped by thick callose. 粗/雙線期，細胞的電子密度增加，細胞壁積累胼胝質(zhì)，切斷大孢子母細胞與珠心細胞之間的胞間連絲，核糖體的數(shù)量增多，線粒體與質(zhì)體的形態(tài)變得不易區(qū)分，呈現(xiàn)脫分化狀態(tài)。

At tetrad stage, dyad, triad, tetrad with micronucleus and polyad appeared. 四分體時期還出現(xiàn)二分體、三分體、含微核的異常四分體及多分體。

Take the quiz if you suspect that one of your friendships is actually a naiad dyad. 做個小測驗看看自己的某段友誼是否是這種二元體。