The base substitution in the coding region of the gene must lead to the change of protein structure
举一反三
- The base substitution in the coding region of the gene must lead to the change of protein structure A: 正确 B: 错误
- What about inserting a base into the coding region of a gene？ A: No impact B: It will change all amino acid sequences of the protein downstream of the insertion point C: Depending on the insertion point, it may have different effects on the protein D: An amino acid will be inserted into the protein sequence E: Three amino acids will be inserted into the protein sequence
- Operator: ( ) A: An operator is a DNA region that is working with promoter for genes to express. B: An operator is a DNA region at 5’ of a gene for a repressor to bind to prevent gene expression. C: An operator is a repressor protein to help genes to express. D: An operator is a repressor protein to inhibit genes to express.
- 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
- Deletion of 4 bases from the coding region of a gene will give _______. A: nonsense mutations B: missense mutations C: silent mutations D: frameshift mutations