AP BIOLOGY

Detailed explanation-1: -The sequence for AACGTAACG in mRNA molecule synthesized after transcription from a DNA strand shall be UUGCAUUGC. In an RNA strand, the genetic code follows the sequence of A-U, G-C, and T-A. Thus, by this genetic coding, the correct answer is option B.

Detailed explanation-2: -It involves copying a gene’s DNA sequence to make an RNA molecule. Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template). Transcription has three stages: initiation, elongation, and termination.

Detailed explanation-3: -Transcription takes place in three steps: initiation, elongation, and termination. The steps are illustrated in Figure 2. Figure 2. Transcription occurs in the three steps-initiation, elongation, and termination-all shown here.

Detailed explanation-4: -The RNA nucleotide sequence is complementary to that of DNA template strand except the presence of uracil in place of thymine. As we know that adenine base pairs with thymine and guanine with cytosine; the RNA sequence of given DNA strand would be UACGGAUCCUG.