QUESTION 14
How can gene flow improve adaptation of population?
a. alleles increase in frequency in original population
b. allele frequencies decrease in new population
c. alleles mutate in different geographical areas beneficial
d. alleles are transferred to a new population

QUESTION 15
How does a molecular clock measure time?
a. by counting the number of nucleotide substitutions over fixed period of time
b. by detecting gene irregularities that result from natural selection
c. by using few gene mutations to calibrate the clock
d. by observing that some genes and other regions of genomes appear to evolve at different rates

QUESTION 16 How does phylogeny differ from systematics?
a. in the naming of organisms
b. in classifying organisms
c. in the hierarchy of classification
d. in the classification of organisms by evolutionary history

QUESTION 17
If you were to observe the activity of methylated DNA, you would expect it to
a. be transcriptionally inactive.
b. be replicating nearly continuously.
c. be unwinding in preparation for protein synthesis.
d. be very actively transcribed and translated.
e. induce protein synthesis by not allowing repressors to bind to it.