Final answer:
The correct mRNA sequence transcribed from the DNA strand TAT GCG CAT TCA is UAU CGC CAU UCA, adhering to the base pairing rules of transcription.
Step-by-step explanation:
The question asks for the mRNA sequence that would be transcribed from the DNA strand TAT GCG CAT TCA.
Transcription involves creating an mRNA strand using DNA as a template wherein adenine (A) pairs with uracil (U) in RNA and cytosine (C) pairs with guanine (G), and vice versa.
Therefore, the transcribed mRNA sequence from the given DNA strand would be:
a) UAU CGC CAU UCA
This because T (thymine) is transcribed to A (adenine), and then A in RNA pairs with U (uracil). Similarly, G (guanine) pairs with C (cytosine), and C in DNA pairs with G in RNA.
The conversion from DNA to RNA involves replacing thymine (T) in DNA with uracil (U) in RNA.