a. two pairs of legs per segment
b. tiny, flattened, crawling forms
c. planarians, flukes, tapeworms
d. nematodes
e. snails, squids, clams
f. wheel animals
g. flagellated collar cells present
h. jellyfish and corals
i. crustaceans, ticks, and insects
j. polychaetes, earthworms, leeches
k. sea urchins, sea stars
For the following statements select the best choice of the four evolutionary processes
listed below.
a. mutation
b. gene flow
c. genetic drift
d. natural selection
This process can rapidly offset the effects of genetic isolation when two populations
come into secondary contact.