Two marbles of equal size and mass were placed on ramps of equal length and height. Marble A traveled a distance of 15 cm before stopping. Marble B traveled a distance of 8 cm before stopping. Explain why Marble A would have traveled farther than Marble B based on the diagrams.

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.