Select the best answer corresponding to the prompt:

During Prophase I of Meiosis I, chromosomes that are similar to one another may swap sequences of DNA, creating new combinations of mutations that become inherited together.

Although there are $64$ possible nucleotide triplets in DNA, they only code for a total of $20$ different amino acids, and hence, there is redundancy.

Mutations in the third position of a codon that do not cause a change in the amino acid sequence coded for $($due to the redundancy of having $64$ possible codons coding for $20$ amino acids$).$