Recombinant DNA Technology MCQs
Practice free Recombinant DNA Technology multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 92 questions — no login required.
Question 37hard
A linear DNA fragment is 100% labeled at one end and has 3 restriction sites for EcoRI. If it is partially digested by EcoRI so that all possible fragments are produced, how many of these fragments will be labeled and how many will not be labeled?
Question 38hard
A cell has five molecules of a rare mRNA. Each cell contains 4 × 105 mRNA molecules. How many clones one will need to screen to have 99% probability of finding at least one recombinant cDNA of the rare mRNA, after making cDNA library from such cell?
Question 39medium
The enzymes that can be used in 5' end labeling of DNA are
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Question 40hard
The restriction endonuclease HaeIII recognizes the sequence GG↓CC and the point of cleavage is given by the arrow. If you want to clone a piece of DNA in a plasmid digested by HaeIII, what will be restriction enzyme of choice
Question 41medium
DNA synthesized from an RNA template is called
Question 42easy
Which one of the following is not a protease?
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Question 43hard
The statistical frequency of the occurrence of a particular restriction enzyme cleavage site that is 6 bases long can be estimated to be
Question 44medium
The substrate for restriction enzyme is
Question 45hard
Hairy roots' induced in vitro by the infection of Agrobacterium rhizogenes, are characterized by P. A high degree of lateral branching. Q. Genetic instability of culture. R. An absence of geotropism. S. Poor biomass production.