Question

Identify the correct features of the genetic code.
i. It is a triplet code.
ii. It shows distinct polarity.
iii. It is overlapping.
iv. The genetic code was deciphered by Watson and Crick.

• A. All correct
• B. Statement (i) and Statement (ii) are correct.
• C. Statement (iii) and (iv) are correct
• D. All wrong

Hint:

Recall the properties of the genetic code: triplet, non-overlapping, degenerate, with polarity. Also remember who actually cracked it.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
The genetic code is a triplet code, non-overlapping, comma-less, degenerate, nearly universal and has fixed polarity.

Step 2: Check the statements
(i) is true as a codon has three bases.
(ii) is true as mRNA is read from the 5' end to the 3' end.
(iii) is false as the code is non-overlapping.
(iv) is false as it was deciphered by Nirenberg, Matthaei, Khorana and Ochoa, not Watson and Crick.

Step 3: Conclusion
Only (i) and (ii) are correct.

Final Answer:
Only statements (i) and (ii) are correct. \[ \boxed{\text{(B) }\text{Statement (i) and Statement (ii) are correct.}} \]