pros and cons of knowing the risk, through genetic testing, of passing hemophilia to your off spring prior to planning a pregnancy

Which sentence best expresses the differing opinions of these two book reviews?

Which of the following best describes the purpose of technology?

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.