用“tetrad”造句大全，tetrad造句
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
The megasporocyte undergoes meiosis and gives rise to a linear or a"T" shaped tetrad of megaspore, the chalazal megaspore was functional.
At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.
At tetrad stage, dyad, triad, tetrad with micronucleus and polyad appeared.
Our main results were as follows: the ovary of male I degenerated and disappeared quickly upon megaspore tetrad degeneration, and developed into macrosporocytes;
Microspore abortion occurred after the tetrad formation.
