chiasmata

chiasmata

美 　英

• n.【解】(視神經)交叉；【生】染色體交叉點
• 網絡姊妹染色單體間會形成交叉；非姐妹染色單體發生交叉；染色單體可能在交叉

詞形變化

復數：chiasmas  復數：chiasmata  

英漢解釋

n.	1. 【解】(視神經)交叉;【生】染色體交叉點

例句

The chiasmata observed during the later stages of the meiotic prophase are cytological evidence of earlier cross-over events.

在減數分裂前期末所看到的交叉是在這以前發生了互換事件的細胞學證據。

Terminalization The movement of chiasmata to the end of the bivalent arms, a process that may occur during late prophase I of meiosis.

發生在第一次減數分裂后期，染色體交叉向二價體染色體臂的末端移動的過程。

Chiasmata are seen during this stage, and by the end of diakinesis the nucleoli and nuclear membrane have disappeared.

在這個時期可以看見交叉，在終變期末細胞核中的核仁，核膜消失。

Chiasma (pl. chiasmata) A connection between homologous chromosomes seen during the prophase stage of meiosis.

在細胞減數分裂的前期，同源染色體之間形成的接觸點。

Genetic recombination can occur without the formation of a chiasmata.

遺傳重組在沒有形成交叉的情況下，也可以發生。