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Class 12BiologyBiotechnology: Principles and ProcessesPrinciples of biotechnology
Medium

When did Cohen and Boyer complete the construction of the first $r-DNA$ by isolating an antibiotic resistance gene?

  • A
    $1871$
  • B
    $1972$
  • C
    $1962$
  • D
    $1961$
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Class 12 Questions

Class 12

Biology Questions

Chapter

Biotechnology: Principles and Processes

Subtopic

Principles of biotechnology

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