Which of the following statements are correct regarding the strands of a transcription unit ? A. DNA-dependent RNA polymerase catalyzes polymerization in the 3' 5' direction. B. The DNA strand with 3' 5' polarity acts as the template strand. C. The strand which does not code for anything during transcription is referred to as the coding strand. D. All reference points while defining a transcription unit are made with

Step-by-step solution

Statement A is incorrect because DNA-dependent RNA polymerase catalyzes polymerization only in one direction, which is 5' 3' . Statement B is correct because the DNA strand with 3' 5' polarity acts as the template for transcription, as RNA synthesis occurs in the 5' 3' direction. Statement C is correct because the strand with 5' 3' polarity, which has the same sequence as the newly synthesized RNA (except thymine instead of uracil), is called the coding strand, even though it does not code for anything during trans