reduction division
reduction division — 名詞
1. the stage of meiosis that is usually first and leaves each new cell with half th
減數第一分裂
減數分裂首輪，染色體數減半
the stage of meiosis that is usually first and leaves each new cell with half the original number of chromosomes
In class, Talia learned that reduction division cuts the chromosome number in half.
課堂上，Talia 學到減數第一分裂會讓染色體數減半。
reduction division cuts chromosome number in half
The diagram shows reduction division before the two cells move apart.
圖示顯示減數第一分裂發生在兩個細胞分開之前。
Scientists call meiosis I reduction division because each new cell has fewer chromosomes.
科學家把 meiosis I 稱為減數第一分裂，因為新細胞的染色體較少。
Our teacher compared reduction division with the next cell division on the board.
老師在黑板上把減數第一分裂和下一次細胞分裂做比較。
The textbook says reduction division happens only during the first meiotic stage.
課本說減數第一分裂只會發生在減數分裂的第一階段。
- first meiotic division
a more neutral textbook term for the same stage
- meiosis I
the numbered label used in many biology courses
- equational division
the second meiotic division, where the chromosome number does not halve again
用法筆記
Used mainly in biology when explaining meiosis. Many modern textbooks prefer first meiotic division or meiosis I.