Evolution Review

What do all of these structures have in common?

• They all have the same function

• They all are the same size

• They have the same basic shape

• They are parts of mammals

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Survival of the fittest can be described as...

• Only the strongest survive and reproduce

• The reason that weaker creatures get killed easier

• The reason that stronger creatures can't reproduce

• The better adapted you are to your environment the better your chance of survival

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Finch beaks are all different sizes. How does Darwin's Theory of Natural Selection explain the different beak sizes that he saw?

• The beaks made the males more attractive

• The beaks were best suited for the food on the islands they lived on

• The beaks were made for fighting over mates

• Beak sizes were just random

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Mexican long-nose bats have extremely long tongues that can be up to 8cm long! They are evidence of natural selection because the features are adaptations that...

• help individuals outcompete others for resources

• are the result of intentional breeding

• show that DNA mutations are necessary

• lead to an increase in predation

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Which question would BEST help determine whether the change in eye span in stalk-eyed flies was influenced by natural selection?

• How does the eye span of stalk-eyed flies compare from one generation to the next?

• Is the eye span of male stalk-eyed flies similar to that of female flies?

• Do fossilized stalk-eyed flies have a shorter body length than living flies?

• What is the relationship between the body length and eye span of stalk-eyed flies?

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What does evolution mean?

• When your pokemon finally gets to the next stage

• a process that results in changes in the genetic material of a population over time

• a process in which nothing really happens

• a process that changes how an animal looks but not much else

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What is genetic diversity?

• The biological variation that occurs within a species

• Different animals have different genes

• The variation in animals on the planet

• The ability to adapt over time to the environment.

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How has adding DNA from other salamander species help save certain salamanders from going extinct due to environmental changes?

• By decreasing the mutations in their DNA

• Increasing genetic variation within the population

• By making DNA more similar across the population

• By creating genetically identical individuals

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Which statement about the ancestry of lizards from the genus Gallotia is best supported by this information on the graph?

• The common ancestor of the lizards first colonized the island of El Hierro.

• The ancestors of each species came from different continents at different times.

• The common ancestor of the lizards probably came from Africa.

• The ancestors of each species evolved in Spain and were brought to the islands at the same time.

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What statement is best supported by the graph shown?

• Competition for food and shelter among reptile species was very low during the Triassic period.

• Environmental conditions for speciation were most favorable for reptiles during the Permian period.

• A great extinction occurred during the Jurassic period.

• Reptiles adapted to a terrestrial environment during the Cretaceous period.

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