Isolation and purification of specific $DNA$ segment from a living organism was achieved by

  • [AIPMT 1993]
  • A

    Crick

  • B

    Nirenberg

  • C

    Khorana

  • D

    Beckwith and his colleagues

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What is false about $t\ RNA$

  • [AIIMS 2003]

The arrangement of three bases in the genetic code signifies a specific

Assertion : Comparative biochemistry provides a strong evidence in favour of common ancestory of living beings.
Reason : Genetic code is universal.

  • [AIIMS 2015]

Based on your understanding of genetic code, explain the formation of any abnormal hemoglobin molecule. What are the known consequences of such a change ?

From the following, identify the correct combination of salient features of Genetic Code

  • [NEET 2019]