From the structural gene coded as 5' TAC CCC ATG GGG TAA GGC GTC 3', what is its mRNA transcript?

To determine the correct mRNA transcript from the given DNA sequence, it's essential to understand how transcription operates. The DNA sequence provided, which is in the 5' to 3' direction, serves as a template for mRNA synthesis. During this process, RNA polymerase synthesizes the mRNA strand by pairing complementary RNA nucleotides with the DNA template strand.

In this context, the DNA sequence 5' TAC CCC ATG GGG TAA GGC GTC 3' can be analyzed as follows:

1. The corresponding RNA nucleotides replace adenine (A) with uracil (U), thymine (T) with adenine (A), cytosine (C) with guanine (G), and guanine (G) with cytosine (C).

2. Thus, the transcription of the provided DNA strand results in the mRNA sequence being complementary to the DNA template strand, reading from 5' to 3' as well.

By converting each of the bases according to the transcription rules:

• T (thymine) -> A (adenine)

• A (adenine) -> U (uracil)

• C (cytosine) -> G (guanine)