The following features occur during protein synthesis:
(i) Movement of m-RNA from the nucleus into the Cytoplasm, where it binds to the ribosomes
(ii) Formation of amino acyl t-RNA complex
(iii) Transcription of specific segments of DNA into m-RNA molecules in the nucleus
(iv) Binding of N-terminal amino acid, methionine t-RNA to the 'P' site of the ribosome. The t-RNA anticodon "pairs with AUG on m-RNA"
(v) Formation of peptide bond between first and second amino acids at the 'A' site
(vi) Release of the completed polypeptide chain from ribosomes
(vii) Migration of dipeptide to form a tripeptide and then a polypeptide The correct order of events is

Options

A. (iii) – (ii) – (i) – (iv) – (v) – (vi) – (vii)
B. (i) – (ii) – (iii) – (iv) – (v) – (vi) – (vii)
C. (iii) – (i) – (ii) – (iv) – (v) – (vi) – (vii)
D. (iii) – (i) – (ii) – (iv) – (v) – (vii) – (vi)

Answer

To determine the correct order of events during protein synthesis, we need to analyze each step provided in the question and arrange them chronologically based on the biological processes involved.

### Step-by-Step Solution:

1. **Transcription of DNA into mRNA**:
- The first step in protein synthesis occurs in the nucleus, where specific segments of DNA are transcribed into messenger RNA (mRNA) by the enzyme DNA-dependent RNA polymerase. This is step (iii).

2. **Post-transcriptional modifications**:
- After transcription, the mRNA undergoes post-transcriptional modifications, including splicing, capping, and polyadenylation, before it exits the nucleus.

3. **Movement of mRNA to the cytoplasm**:
- Once processed, the mRNA moves from the nucleus into the cytoplasm, where it binds to ribosomes. This is step (i).

4. **Formation of aminoacyl t-RNA complex**:
- In the cytoplasm, amino acids are activated and attached to their respective tRNA molecules, forming the aminoacyl t-RNA complex. This is step (ii).

5. **Binding of tRNA to the ribosome**:
- The tRNA carrying the N-terminal amino acid (methionine) binds to the 'P' site of the ribosome. The anticodon of the tRNA pairs with the start codon (AUG) on the mRNA. This is step (iv).

6. **Formation of peptide bond**:
- A peptide bond is formed between the first amino acid (attached to the tRNA in the 'P' site) and the second amino acid (attached to the tRNA in the 'A' site). This is step (v).

7. **Migration of dipeptide to form a tripeptide and then a polypeptide**:
- The ribosome moves along the mRNA, facilitating the addition of amino acids to form a polypeptide chain. This is step (vii).

8. **Release of the completed polypeptide chain**:
- Finally, when the ribosome reaches a stop codon, the completed polypeptide chain is released from the ribosome. This is step (vi).

### Correct Order of Events:
Based on the analysis above, the correct order of events in protein synthesis is:
1. (iii) Transcription of specific segments of DNA into m-RNA molecules in the nucleus.
2. (i) Movement of m-RNA from the nucleus into the Cytoplasm, where it binds to the ribosomes.
3. (ii) Formation of aminoacyl t-RNA complex.
4. (iv) Binding of N-terminal amino acid, methionine t-RNA to the 'P' site of the ribosome. The t-RNA anticodon "pairs with AUG on m-RNA".
5. (v) Formation of peptide bond between first and second amino acids at the 'A' site.
6. (vii) Migration of dipeptide to form a tripeptide and then a polypeptide.
7. (vi) Release of the completed polypeptide chain from ribosomes.

### Final Answer:
The correct order of events is: (iii) → (i) → (ii) → (iv) → (v) → (vii) → (vi).