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

  • A
    Crick
  • B
    Nirenberg
  • C
    Khorana
  • D
    Beckwith and his colleagues

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Similar Questions

The salivary gland chromosomes in the dipteran larvae are useful in gene mapping because

Assertion $(S)$: $DNA$ structure contains $A-T$ complementary base pairing.
Reason $(R)$: $DNA$ structure does not contain uracil.

In the given polynucleotide chain,which of $P, Q, R,$ and $S$ are purine nitrogenous bases?

$DNA$ strands are antiparallel because of the presence of

In a $DNA$ molecule,.................

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