Q. What is the characteristic of lacZ gene of pUC18 vector among the following?

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Q. Which one of the following is the first engineered plasmid vector?

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Q. What is the expanded form of pBR in pBR322?

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Q. What is incorrect about plasmid?

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Q. The repressor for the β-galactosidase gene is encoded by ___________

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Q. Transformation involves the uptake of _____________

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Q. What is conjugation?

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Q. What is transduction?

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Q. In which year Frederic Griffith discovered transformation?

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Q. During Frederick Griffith’s experiments what type of colonies were generated by the capsulated pneumococci?

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Q. What is the function of the capsule of the bacterial cells?

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Q. How many types of bacterial capsule are present for pneumococcus depending on the genotype of the cell?

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Q. The genetic information is stored in DNA rather than protein.

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Q. In the following which bacteria only take up their own DNA?

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Q. How many copies of special short nucleotide pair sequences for identification are present in H. influenzae and N. gonorrbacae?

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Q. What do you mean by competent bacteria?

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Q. Competence in a bacteria ___________

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Q. In which phase bacteria develop competence?

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Q. In which bacteria competence pheromones was first identified?

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Q. What is the percentage of DNA molecules taken up by competent cells during the transformation?

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