The construction of the first recombinant DNA emerged from the possibility of linking a gene encoding…

The construction of the first recombinant DNA emerged from the possibility of linking a gene encoding antibiotic resistance with a native plasmid of
  1. Salmonella typhimurium
  2. Escherichia coli
  3. Haemophilus influenzae
  4. Bacillus thuringiensis

Solution

The construction of the first recombinant DNA emerged from the possibility of linking a gene encoding antibiotic resistance with a native plasmid (autonomously replicating circular extra-chromosomal DNA) of Salmonella typhimurium. Stanley Cohen and Herbert Boyer accomplished this in 1972 by isolating the antibiotic resistance gene by cutting out a piece of DNA from a plasmid which was responsible for conferring antibiotic resistance.

Asked in: NEET 2015 (Phase 2)

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