What role do rRNA sequences play in modern cladogram construction?

Which of the following is a limitation of dichotomous keys?

Which of the following is NOT a characteristic of the kingdom Animalia?

Identify which of the following is NOT common in the three domains of life.

Which of the following is exclusive to bacteria?

Which of the following provides the primary basis for the classification of Archaea into different phyla?

Which of the following criteria is not used for grouping and classifying bacteria?