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单词 exon
释义
N5520371(exon)Spoken.12Fiction.1Magazine.14Newspaper.16Academic.28

exon1

/ˈeksən/
Biochemistry a segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence
【生化】外显子, 编码序列。比较INTRON.
词源
late 20th cent.: from expressed (see EXPRESS1)+-ON.

exon2

/ˈeksɒn/
Brit. each of the four officers acting as commanders of the Yeomen of the Guard
〈英〉英王仪仗卫士队长。
词源
mid 18th cent.: representing the pronunciation of French exempt 'free from', from Latin exempt- 'taken out', from the verb eximere, so named because these officers were exempt from normal duties.
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更新时间:2025/8/14 17:26:48