Question

select all that apply
which of the following are true statements about the genetic code?
each codon in the genetic code can stand for two or more amino acids.
the genetic code allows 20 amino acid to be coded by only 4 different nucleotides.
the genetic code relates mrna codons to protein structure.
the genetic code is expressed as three - nucleotide long sequences called codons.

Explanation:

Answer:

The genetic code allows 20 amino acid to be coded by only 4 different nucleotides.
The genetic code relates mRNA codons to protein structure.
The genetic code is expressed as three - nucleotide long sequences called codons.