10) The initial section of the B chain of insulin is represented by the following amino acids: phenylalanine - valine - aspartic acid - glutamine - histidine - leucine - cysteine - glycine - serine - histidine. Determine the quantitative ratio of A + T and G + C in the DNA strand encoding this region of insulin.
Nucleotide sequence (BLAST ncbi resourse)
TTC TAC ACA CCC AAG ACC CGC CGG GAG GCA
AAG ATG TGT GGG TTC TGG GCG GCC CTC CGT (two strands)
percentage of A-T pairs = 11/30 = 36,7%
percentage of G-C pairs = 19/30 = 63,3%