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Question 1 = B
Question 2 = B
Question 3 = D
Question 4 = D
Question 5 = D
Question 6 = C
• On a phylogenetic tree, what happened at a
‘node’?
– A) an ancestral species gained a new adaptation
– B) an ancestral species failed to evolve
– C) speciation (i.e., an ancestral species split into
two descendant lineages)
Question 7 = D
• According to the tree
at the left
– A) seals are ancestral
to horses
– B) whales are the
most evolved of the
taxa shown
– C) horses evolved into
giraffes
– D) none of the above