approximately how many does earth rotate as it moves in its orbit from potion a back to potion a
a) 1 time
b) 15 times
c) 24 times
d) 365 times

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

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.

Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing