When comparing protein-coding DNA sequences of similar genes in related species, you see that some of the sequences are longer in one species compared to the other. Which of the following is the most likely number of extra bases that you would see

Homolog genes with sequence identity often exhibit differences in length associated with size variations in the intronic sequences

Explanation:

In eukaryotic organisms, genes are composed by 1 - coding sequences (i. e., exons) that are transcribed into precursor mRNAs, and 2-noncoding regions (or introns), which are not transcribed but contain sequences involved in the control of gene expression