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Biology · Principles and Processes in Biotechnology

हिन्दी

In the construction of the first recombinant DNA by Stanley Cohen and Herbert Boyer in 1972, the antibiotic resistance gene was isolated from which organism and linked to its native plasmid?

  1. A
    Escherichia coli
  2. B
    Salmonella typhimurium
  3. C
    Agrobacterium tumefaciens
  4. D
    Bacillus thuringiensis
View Answer & Solution

Correct answer · Option B

Salmonella typhimurium

Explanation

The first recombinant DNA was constructed by linking a gene encoding antibiotic resistance with a native plasmid of Salmonella typhimurium.

Related questions

Match List-I with List-II: \n List-I List-II A ampR and tetR in pBR322 I Protein involved in plasmid replication B rop II Selectable markers C ori III Recognition site for BamH I D Tetracycline gene IV Origin of replication \n Choose the correct answer from the options given below:→Which of the following vectors is naturally disarmed and modified to deliver genes of interest into a variety of dicotyledonous plants?→Match List-I with List-II: List-I List-II A Elution I Process of taking up recombinant DNA into host B Transformation II Extraction of DNA bands from agarose gel C Palindromic sequence III Sequence reading same forward and backward D Cloning IV Making multiple identical copies of DNA Choose the correct answer from the options given below:→Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Plasmids and bacteriophages are widely used as cloning vectors in recombinant DNA technology. Reason (R): Plasmids and bacteriophages have the ability to replicate within bacterial cells independent of the control of chromosomal DNA. In the light of the above statements, choose the correct answer from the options given below:→
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