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Approximately, ___A___ restriction enzymes have been isolated from over ___B___ strains of bacteria.

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Important Questions on Biotechnology - Principles and Processes

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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
The cutting of DNA at a specific location became possible with the discovery of:
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Which of the following is a restriction endonuclease?
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Which one of the following represents a palindromic sequence in DNA?
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
The construction of the first recombinant DNA emerged from the possibility of linking a gene encoding antibiotic resistance with a native plasmid of
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
What is the following is correct for the movement of DNA fragments on agarose gel during gel electrophoresis?
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Commonly used vectors for human genome sequencing are:
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
A gene whose expression helps to identify transformed cell is known as
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
In gel electrophoresis, separated DNA fragments can be visualized with the help of
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
The DNA fragments separated on an agarose gel can be visualised after staining with:
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
109 bacteria were spread on an agar plate containing penicillin. After incubation overnight at 37oC 10 bacterial colonies were observed on the plate. That the colonies are likely to be resistant to penicillin can be tested by
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
DNA's precipitation out of a mixture of biomolecules can be achieved by treatment with:
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
A foreign DNA and plasmid cut by the same restriction endonuclease can be joined to form a recombinant plasmid using
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Which vector can clone only a small fragment of DNA?
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology

Following statements describe the characteristics of restriction endonucleases. Identify the incorrect statement.

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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Identify the palindromic sequence.
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
The specific palindromic sequence which is recognized by EcoRl is
MEDIUM
Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Identify the wrong statement with regard to restriction enzymes.
HARD
Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Eco RI and Rsa I restriction endonucleases require 6bp and 4bp sequences respectively for cleavage. In a 10 kb DNA fragment how many probable cleavage sites are present for these enzymes
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
Restriction enzyme work by cleaving
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Biology>Biotechnology>Biotechnology - Principles and Processes>Tools of Recombinant DNA Technology
The introduction of T-DNA into plants involves :