Match List-I with List-II
| List-I | List-II |
|---|---|
| Terms | Relationships |
| (A) Capping in hnRNA | (I) Joining of DNA |
| (B) DNA Ligase | (II) Replication starts |
| (C) Replication fork | (III) George Gamow |
| (D) Genetic code | (IV) Addition of unusual nucleotide |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
(A) Capping in hnRNA — this matches (IV) Addition of unusual nucleotide. After transcription the hnRNA is capped. An unusual nucleotide, methyl guanosine triphosphate, is added to the 5′ end of the hnRNA.
(B) DNA Ligase — this matches (I) Joining of DNA. During replication one strand is made in pieces. DNA ligase joins these fragments.
(C) Replication fork — this matches (II) Replication starts. The two strands of a long DNA cannot be separated along their whole length. So replication goes on in a small opening of the helix called the replication fork, which forms where replication begins and then moves along the DNA.
(D) Genetic code — this matches (III) George Gamow. This physicist argued that, since there are only 4 bases and they have to code for 20 amino acids, the code should be made of three bases (a triplet).