BIOMOLECULES AND ENZYMES

Detailed explanation-1: -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. This makes option D correct answer.

Detailed explanation-2: -3-C G T A A G C C G A T C A T T G-5.

Detailed explanation-3: -Once it was determined that messenger RNA (mRNA) serves as a copy of chromosomal DNA and specifies the sequence of amino acids in proteins, the question of how this process is actually carried out naturally followed. It had long been known that only 20 amino acids occur in naturally derived proteins.