Natural Selection

Sailed around the world on the Beagle and saw that finches in the Galapagos Islands went through _____________, a part of evolution that contests that organism adapt to their natural surroundings.

• Charles Darwin; Natural Selection

• Charles Darwin; Selective Breeding

• Gregor Mendel; Natural Selection

• Gregor Mendel; Selective Breeding

Darwin discovered finches have __________ which led to his theory of   Natural Selection.

• The same beaks on all islands

• Different feathers

• Different types of beaks for the same food source

• Different types of beaks for the different types of food sources

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Darwin’s study of evolution led him to coin ________________, which is   a process where organisms naturally change to adapt to their   environment.  Counter to this point, if an organism is purposely bred for specific results, we call it ______________.

• Theory of evolution; natural selection

• Natural selection; theory of evolution

• Selective breeding; natural selection

• Natural selection; selective breeding

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The process by which organisms with variations that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variations. (a)  

• Evolution

• Creationism

• Natural Selection

• Mutation

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What process is being shown in this image?

• Variation

• Natural Selection

• Selective Breeding

• Homeostasis

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Eider ducks live in the ocean and have a layer of warm feathers underneath their regular feathers. They can have thin feathers, medium feathers, or thick feathers. These feathers help the ducks stay warm in cold water. Ducks with thicker feathers are more likely to stay warm and survive in cold water. But, in warm water, thicker feathers can make the ducks overheat and die. The population of ducks shown above lives in an environment that has always had very cold water. Could there ever have been ducks with thin feathers in this population?

• No ducks could have been born with the thin-feather trait because none of the adult ducks had that trait to pass down.

• No ducks could have been born with the thin-feather trait in the past, but some with that trait could be born in the future if the environment changes to be warmer.

• A duck could have been born with a mutation in its genes for the thin-feather trait and lived for a little while, but it would have been more likely to die before it had offspring.

• A duck could have been born with a mutation in its genes for the thin-feather trait, but having a mutation in its genes would have caused it to die when it was born.

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Survival of the ​ (a)   means that individuals that are better adapted to their ​ (b)   survive and pass on their ​ (c)   more successfully.

• fittest

• environment

• traits

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An inheirted trait that increases an organism's chance of surviving and reproducing in a particular environment. (a)  

• Variation

• Differentiation

• Adaptation

• Genetic Specialist

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Variation must exist among species in order for them to survive. What does the word variation mean?

• The same traits among the same species

• The difference in traits among the same species

• The same traits among different species

• The difference in traits among different species

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Keeping your species alive while others are dying off is part of evolution.    Which of the following phrases would be most characteristic of this   statement?

• Competition

• Over production of offspring

• Inheritance

• Survival of the Fittest

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