How many distinct 55-amino-acid sequences are there?
So, there are 2.19 × 1099 distinct 165-nucleotide sequences, but only 9.00 × 10 68 distinct 53-amino-acid peptides. That’s a big difference, and suggests a lot of repetition in DNA. On average, how many ways can each 53-peptide sequence be coded? If you don’t want to do problems like the above, you will need to know how to divide numbers in scientific notation!
