chiasmata

chiasmata

美 　英

• n.【解】(视神经)交叉；【生】染色体交叉点
• 网络姊妹染色单体间会形成交叉；非姐妹染色单体发生交叉；染色单体可能在交叉

词形变化

复数：chiasmas  复数：chiasmata  

英汉解释

n.	1. 【解】(视神经)交叉;【生】染色体交叉点

例句

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

在减数分裂前期末所看到的交叉是在这以前发生了互换事件的细胞学证据。

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

发生在第一次减数分裂后期，染色体交叉向二价体染色体臂的末端移动的过程。

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

在这个时期可以看见交叉，在终变期末细胞核中的核仁，核膜消失。

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

在细胞减数分裂的前期，同源染色体之间形成的接触点。

Genetic recombination can occur without the formation of a chiasmata.

遗传重组在没有形成交叉的情况下，也可以发生。