Question

Select the INCORRECT statement with respect to coding strand.

• A. It is also known as sense strand.
• B. The terminator is located at 3' end of coding strand.
• C. The nucleotide sequence of this strand is the same as in RNA, except that RNA contains uracil in place of thymine.
• D. The nucleotide sequence of this strand is the same as in the template strand with 3' \(\rightarrow\) 5' polarity.

Hint:

The coding strand is complementary to the template strand, not identical to it.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept
The coding (sense) strand is the DNA strand that is not copied. Its sequence matches the mRNA except that it has T where RNA has U.

Step 2: Check the statements
The promoter lies at the 5' end and the terminator at the 3' end of the coding strand. So the first three statements are true.

Step 3: Find the wrong one
The coding strand is complementary and antiparallel to the template strand, so its sequence is not the same as the template strand.

Final Answer:
The statement saying the coding strand equals the template strand is incorrect. \[ \boxed{\text{(D) }\text{The nucleotide sequence of this strand is the same as in the template strand with 3' }\rightarrow\text{ 5' polarity.}} \]