Polio is a disease that can cause paralysis. doctors treated patients with casts and braces, but the work of elizabeth kenny led to the use of hot baths and exercise to treat polio victims. these patients had less incidence of paralysis. kenny’s ideas and their acceptance were due to
skepticism.
popular opinion.
open0mindedness.
scientific consensus.

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.

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12