tetrad
英 ['tetr?d]
- n. 四個(gè)；四個(gè)一組；[生物] 四分染色體；四價(jià)元素
IELTS
英文詞源
- tetrad (n.)
- "the number four, collection of four things," 1650s, from Greek tetras (comb. form tetrad-) "group of four, number four" (see tetra-).
雙語(yǔ)例句
- 1. At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.
- 此時(shí)每條染色體由一對(duì)染色單體構(gòu)成,這兩條聯(lián)合的染色體稱(chēng)為四分體.
來(lái)自《簡(jiǎn)明英漢詞典》
- 2. Microspore abortion occurred after the tetrad formation.
- 小孢子敗育發(fā)生在四分體形成以后.
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- 3. Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
- 大孢子四分體為線(xiàn)形, 合點(diǎn)端功能大孢子發(fā)育成為蓼型胚囊.
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- 4. Cytokinesis was simultaneous and the arrangement of microspores in the tetrad was tetrahedral.
- 胞質(zhì)分裂為同時(shí)型,四分體中小孢子排列呈正四面體形.
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- 5. The characteristics of tetrad was that the nucleus and Golgi bodies being in the active state.
- 四分孢子的顯著特征是細(xì)胞核和高爾基體呈活躍狀態(tài).
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