题目内容

Watson & Crick won the noble prize in 1962 for their discoveries concerning（）

A. the interaction between tumour viruses and the genetic material of the cell
B. the mobile genetic elements
C. the molecular structure of nucleic acids
D. the invention of the PCR method

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It is easier to melt DNA richer in AT than GC because（）

A. it is more heat sensitive
B. there is one less hydrogen bond in an AT base pair
C. the helix pitch is longer in AT rich regions
D. All of the three statements

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What are the target and the probe of the Southern blotting（）

A. DNA, DNA
B. RNA, RNA
C. Protein, antibody
D. None of the above

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Which pathway function by removing damaged DNA regions and synthesizing new DNA using the intact strand as a template（）

A. photoreactivation
B. excision repair
C. mismatch repair
D. all of the above

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Chinese poems are usually composed antithetically with
characters per line（）Chinese poems are usually composed antithetically with
characters per line（）

A. four or five
B. five or seven
C. five or six
D. four or six

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Watson & Crick won the noble prize in 1962 for their discoveries concerning（）

A. the interaction between tumour viruses and the genetic material of the cell B. the mobile genetic elements C. the molecular structure of nucleic acids D. the invention of the PCR method

It is easier to melt DNA richer in AT than GC because（）

What are the target and the probe of the Southern blotting（）

Which pathway function by removing damaged DNA regions and synthesizing new DNA using the intact strand as a template（）

Chinese poems are usually composed antithetically withcharacters per line（）Chinese poems are usually composed antithetically withcharacters per line（）

A. the interaction between tumour viruses and the genetic material of the cell
B. the mobile genetic elements
C. the molecular structure of nucleic acids
D. the invention of the PCR method

Chinese poems are usually composed antithetically with
characters per line（）Chinese poems are usually composed antithetically with
characters per line（）