The protein MutH in E. coli can recognize:()
A. Twisty double-strands of DNA
B. Hemi-methylated GATC
C. The insertion site of the intercalator
D. The gap between Okazaki fragments
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A man suffers from fragile X syndromen. The cause is that n turns to 300 from 60. Then which the following is the cause of this disease:()
A. synonymous mutation
B. missense mutation
C. nonsense mutation
D. frameshift mutation
E. dynamic mutation
In nucleic acid, the point mutation is:()
A. One base-pair is replaced by another is called point mutation
B. Only the mutation that leads to the change of amino acid can be called point mutation
C. The mutation that don’t change phenotype is called point mutation
D. The mutation that causes dysfunction of a single gene is called point mutation
Frameshift mutation results from base-pairs:()
A. Transition
B. Transversion
C. Hydrolysis
D. Insertion
E. Oxidation
Which of the following are not functions of the core of DNA pol:()
A. Synthesis of DNA in 5’→3’ direction
B. Synthesis of DNA in 3’→5’ direction
C. Proofreading
D. Ligation of Okazaki fragments
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