1. Phylogeny and the Tree of Life
Chapter 26
Phylogeny and the Tree of Life
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2. Which of the following taxonomic names includes the fewest number of species?
Animalia
Mammalia
Hominidae
Primates
Chordata
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3. Which branch point on the phylogenetic tree represents the most recent common ancestor of humans and fish? A B C D
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4. If new evidence were uncovered indicating that taxon E in the figure is the sister taxon of a group consisting of taxa D and F, how would this change the phylogeny?
Answer A
Answer B
Answer C
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5. Which of the following pairs might be considered both homologous and analogous?
dragonfly wing and penguin flipper
dragonfly wing and bat wing
bat wing and seal flipper
seal flipper and penguin flipper
penguin flipper and bat wing
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6. Which of the following shared characteristics is not useful for distinguishing among the terrestrial vertebrates?
four walking legs
amniotic egg
feathers
hair
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7. Which of the following would make the most suitable outgroup species for a cladogram relative to the other species?
frog
tuna
snake
penguin
bat
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8. Given the DNA sequence data in the table, which phylogenetic tree is the most parsimonious?
Answer A
Answer B
Answer C
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings.

9. Choose the pair of paralogous genes.
human α hemoglobin and chimpanzee α hemoglobin
human α and β hemoglobin
two alleles of the human α hemoglobin gene
normal β hemoglobin and β hemoglobin with the sickle-cell mutation
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10. Which of the phylogenetic hypotheses concerning the origin of the three domains has the least amount of supporting data?
Answer C
Answer A
Answer B
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings.