A polypeptide contains 103 amino acids, what is the length of the base pairs?

309 (+3 for stop codon)

Explanation:

The Genetic code is a scheme of 3 nucleotide base pair codons that code for different amino acids. Each amino acid has a codon of 3 base pairs. Therefore, to calculate the size of the mRNA, we use the formula: Total base pairs = Amino acids * 3 B. P = 103 * 3 = 309 The length of the mRNA that codes for 103 amino acids is 309 base pairs plus a 3 base pair stop codon that terminates translation.