Statement $P$: Uracil is not present in the structure of $DNA$.
Statement $Q$: $A-T$ complementary base pairing is present in the structure of $DNA$.

  • A
    Both statements $P$ and $Q$ are incorrect.
  • B
    Both statements $P$ and $Q$ are correct. Statement $P$ is the correct explanation of statement $Q$.
  • C
    Both statements $P$ and $Q$ are correct. Statement $Q$ is the correct explanation of statement $P$.
  • D
    Both statements $P$ and $Q$ are correct.

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Similar Questions

$A$ $DNA$ fragment contains $12$ nucleotides. What is the ratio of purine and pyrimidine nitrogenous bases in it?

If the sequence of one strand of $DNA$ is $5^{\prime}-ATGCATCG-3^{\prime}$,find the sequence of the complementary strand in the $5^{\prime} \rightarrow 3^{\prime}$ direction.

In the structure of $DNA$,the length of one full turn is $.........$ and the number of nitrogen base pairs is $...........$.

Identify the correct matching for Euchromatin and Heterochromatin from the given statements:
$I -$ Loosely packed
$II -$ Densely packed
$III -$ Darkly stained region
$IV -$ Lightly stained region
$V -$ Transcriptionally active chromatin
$VI -$ Transcriptionally inactive chromatin
Euchromatin $\quad\quad$ Heterochromatin

The linkage between two nucleotides occurs between the $3'$ carbon of the sugar of the first nucleotide and the $5'$ carbon of the sugar of the second nucleotide. Which of the following correctly represents these positions?

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