The adenines in a gene from a prokaryotic cell are 20% of its total nucleotides. The gene contains 11,700 hydrogen bonds and is transcribed to mRNA. Find: a. the total number of nucleotides in the mRNA, b. the number of amino acids of the protein.
a. 20% of this DNA molecule consist of adenine which means that equal percent of thymine is present as well forming 40%DNA as Adenine - Thymine base pair. (40 base pairs). While rest of the 60%DNA consist of guanine - cytosine.
X *40 + x *60 =11700
100 x =11700
X =117
Total number of nucleotides =117
b. One amino acid is coded by 3 nucleotides .
So, X amino acids will be coded by 117 nucleotides
Then, X * 3 = 117
X= 39
Total number of amino acids =39
The adenines in a gene from a prokaryotic cell are 20% of its total nucleotides. The...