Which of the Following Do Phylogenetic Comparisons of Secondary Structures

Multiple Choice

Which of the following do phylogenetic comparisons of secondary structures of rRNAs from a variety of species reveal?

A) strikingly similar structures and a high degree of similarity in the nucleotide sequences of the rRNAs themselves
B) strikingly similar structures and a low degree of similarity in the nucleotide sequences of the rRNAs themselves
C) dissimilar structures and a high degree of similarity in the nucleotide sequences of the rRNAs themselves
D) dissimilar structures and a low degree of similarity in the nucleotide sequences of the rRNAs themselves