Santiago Island
Fernandina Island
Isabela Island
Mainland Ancestor
Santa Cruz Island
San Cristobel Island
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

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What differences are apparent in the heads of the five bird species shown in the figure above?
Which of the birds shown in the figure above has the smallest beak?
The food on San Cristobel Island is hard, tough nuts. How might food availability have affected the
evolution of the San Cristobel Island bird shown in the figure above?
Considering the beak structure of the birds shown in the figure above, which bird—a population from
Santa Cruz Island or a population from Isabela Island—might survive more successfully on San Cristobel
Island? Why?
Santiago Island
Fernandina Island
Isabela Island
Mainland Ancestor
Santa Cruz Island
San Cristobel Island




What differences are apparent in the heads of the five bird species shown in the figure above?
Which of the birds shown in the figure above has the smallest beak?
The food on San Cristobel Island is hard, tough nuts. How might food availability have affected the
evolution of the San Cristobel Island bird shown in the figure above?
Considering the beak structure of the birds shown in the figure above, which bird—a population from
Santa Cruz Island or a population from Isabela Island—might survive more successfully on San Cristobel
Island? Why?
Units 5 & 6 – Evidence and Mechanisms of Evolution Review
Vocabulary to know:
Acquired traits
Adaptation
Adaptive radiation
Coevolution
Common ancestor
Convergent evolution
Directional selection
Disruptive selection
Fitness
Fossils
Founder effect
Galapagos Islands
Gene pool
Genetic drift
Genetic equilibrium
Geographic isolation
Homologous structures
Index fossil
Mass extinction
Natural selection
Punctuated equilibrium
Reproductive isolation
Stabilizing selection
Survival of the fittest
Vestigial structures
Questions to Answer:
 How is geologic time divided (from largest to smallest)
 Compare and contrast Darwin’s Theory with Lamarck’s Theory of Evolution.
Teachers do it too
so students know to flip
the page .

Units 5 & 6 – Evidence and Mechanisms of Evolution Review
Vocabulary to know:
Acquired traits
Adaptation
Adaptive radiation
Coevolution
Common ancestor
Convergent evolution
Directional selection
Disruptive selection
Fitness
Fossils
Founder effect
Galapagos Islands
Gene pool
Genetic drift
Genetic equilibrium
Geographic isolation
Homologous structures
Index fossil
Mass extinction
Natural selection
Punctuated equilibrium
Reproductive isolation
Stabilizing selection
Survival of the fittest
Vestigial structures
Questions to Answer:
 How is geologic time divided (from largest to smallest)
 Compare and contrast Darwin’s Theory with Lamarck’s Theory of Evolution.
Teachers do it too
so students know to flip
the page .
