Question

What are codon and an exon?

Answer 1

Codon:

1. A codon is a DNA or RNA sequence of three nucleotides (a trinucleotide) that encodes a particular amino acid.
2. It contains genetic information and is also used to stop signals required for protein synthesis.
3. Example: Codon AUG codes for Methionine, UGG for Tryptophan, etc.

Exon:

1. An exon is a sequence of DNA that will form a part of the final mature RNA produced by that gene after introns have been removed by RNA splicing.
2. Some of them encode the amino acids of a protein.
3. The five exons are W, X, Alpha, Beta, and Z.