Question 7 options:
if the dna sequence reads tat, what is the mrna codon?

AUA

Explanation:

Thiamine pairs with Adenine. However, in mRNA, the Thiamine base does not exist. It is replaced by Uracil. Therefore, instead of the A in the DNA strand pairing with a T, it pairs with a U on the mRNA.

The DNA sequence that reads TAT gives rise to an mRNA codon that corresponds to the amino acid tyrosine

Explanation:

According to the central dogma of life the DNA gets transcribed to RNA which gets translated to the protein, the protein is the ultimate macromolecules that helps in the metabolic activities of the human, an important aspect of this process is that not all DNA is converted into RNA similarly not all RNA is converted to protein, only the mRNA is converted to the protein based on a degenerative codon mechanism.

equal distribution i think.

correct answer is a. and d.