Question

what happens in redundancy? multiple codons code for the same amino acid many amino acids are coded for by one codon one codon codes for dna

Explanation:

In the context of genetic code redundancy, the definition is that multiple codons (three - nucleotide sequences) can code for the same amino acid. The second option is incorrect because a single codon typically codes for only one amino acid (with the exception of stop codons in some cases, but not for multiple amino acids). The third option is incorrect as codons code for amino acids (or stop signals), not for DNA. So the correct description of redundancy is that multiple codons code for the same amino acid.

Answer:

A. multiple codons code for the same amino acid