The creation of a stop codon in the middle of a coding sequence
within the gene is a:()
A: missense
mutation;
B: frameshift
mutation;
C: nonsense
mutation;
D: point
mutation;
E: silent
mutation.
within the gene is a:()
A: missense
mutation;
B: frameshift
mutation;
C: nonsense
mutation;
D: point
mutation;
E: silent
mutation.
C
举一反三
- Amino acid sequence of the encoded protein is not changed in A: Silent mutation B: Acceptable mis-sense mutation C: Both (A) and (B) D: None of these
- The<br/>transfer of genetic material between bacteria in direct physical<br/>contact is called() A: conjugation B: transformation C: transduction D: lysogenic<br/>conversion E: mutation
- A gene knock-in (or knock-in) refers to a genetic engineering method that involves the one-for-one substitution of DNA sequence information in a genetic locus or the insertion of sequence information not found within the locus. A gene knock-in therefore can be seen as a gain of function mutation and a gene knockout a loss of function mutation, but a gene knock-in may also involve the substitution of a functional gene locus for a mutant phenotype that results in some loss of function.
- 名词解释：reverse mutation
- 突变热点(hot spots of mutation)
内容
- 0
Minor changes of HA are called A: Gene mutation B: Gene reassortment C: Antigenic shift D: Antigenic drift
- 1
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
- 2
条件致死突变（conditional lethal mutation)
- 3
The anti-UV mutation of microorganisms must be induced by ultraviolet rays
- 4
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