by preventing a gene from being expressed. ()
A: Transcription
B: Induction
C: Translation
D: Replication
E: Repression
举一反三
- Reporter genes can be used to indicate not only the amount of gene expression, but also the sites of the expressed proteins.
- which of following do not belong to pathogenic variations of the endogenous genes ( ) A: gene amplification B: abnormal gene expression C: invasion of the foreign genes D: gene arrangement E: point mutation
- Recessive alleles form no gene products, and thus are not expressed. A: 正确 B: 错误
- Some genes can be expressed in different ways to generate multiple gene products from a single segment of DNA.
- 中国大学MOOC: Recessive alleles form no gene products, and thus are not expressed.
内容
- 0
Which of the following process needs primer? ( ) A: DNA replication B: RNA replication C: RNA transcription D: RNA translation E: DNA ligation
- 1
In many of Escherichia coli's operons, gene transcription is regulated by a single factor.
- 2
The operator is A: Another name for the terminator of a gene B: A DNA site bound by repressor proteins C: A protein that coordinates gene expression D: A part in the leader region of mRNA
- 3
Operator is() A: where the<br/>repressor binds to regulate gene expression in an operon. B: controlled<br/>by promoter. C: is induced<br/>by lactose. D: is repressed<br/>by tryptophan.
- 4
Which<br/>of following can cause the great variation of influenza virus and<br/>wide epidemic:() A: gene<br/>reassortment B: gene<br/>recombination C: transduction D: transformation E: conjunction