A codon is a set of 3 base pairs. Each codon codes for a specific amino acid. So the ratio between codon and amino acid is 1:1 and the ratio between base pairs and codon is 3:1.
If you have 1,500 base pairs then we can mathematically solve the number of codons:
Since the ratio of codon to amino acid is 1:1, then for every 500 codons, there are 500 amino acids.
Eukaryotes along with some prokaryotes also perform the process of photosynthesis. Photosynthesis needs chloroplast and it is also found in some of the prokaryotes.