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The immediate transcript of a tRNA gene is known as precursor tRNA. tRNA基因的直接转录物叫做tRNA前体。
tRNA precursor 转移RNA前体
The immediate transcript of a t RNA gene is known as precursor tRNA. tRNA基因的直接转录物叫做tRNA前体。
The precursor of the modern car was a horseless carriage with a petrol engine. 现代汽车的前身是不用马拉的，装有汽油发动机的车子。
Thefirst telephone was the precursor of modern communications networks. 最早出现的电话是现代通讯网的雏型。
The precursor or stem cell of a plasma cell. 成浆细胞浆细胞的前体细胞或干细胞
A precursor cell of a melanocyte or melanophore. 成黑素细胞产生黑素细胞的母体细胞
Error is often the precursor of what is correct. 错误常常是正确的先导。
The precursor or stem cell of a plasmacell. 成浆细胞浆细胞的前体细胞或干细胞。
An originator of a line of descent;a precursor. 前辈家族血脉的开始者；先驱
An originator of a line of descent; a precursor. 前辈家族血脉的开始者;先驱。
A severe cold may be the precursor of pneumonia. 重伤风可能是急性肺炎的先兆。
Lysine is a precursor of certain alkaloids. 赖氨酸是某些生物碱的前体。
Like mRNA, both tRNA and rRNA are transcripts of chromosomal DNA. tRNA及rRNA同mrna一样，都是染色体DNA的转录产物。
The first ribin us a precursor of spring. 头一只知更鸟是春天的先兆。
ARJ21 is seen as the precursor to a jumbo jet. ARJ21型飞机被看作是大型喷气式飞机的前身。
The correct tRNA is determined by triplet codes found in the mRNA. 正确的tRNA是由三联守则中表达。
Her precursor as school principal was an eminent educator. 她任校长前是一位卓越的教育家。
Crazing is the invariable precursor of brittle fracture. 出现小裂纹必然是脆性断裂的前兆。
These include the chlorophyll precursor protochlorophyllide a. 这些受体包括叶绿素的前体原叶绿酸a。