What are some different types of group behavior?

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.

Are the earth's ocean floor and continents the same age geologically? why or why not?

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.