Theory of Evolution by Natural Selection

adaptation

• an early form of a species

• an inherited trait that helps an organism to survive and reproduce in its environment

• a group of similar organisms that can reproduce fertile offspring

• differences between individuals of the same species

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Which answer is the best definition for variation?

• an inherited characteristic passed from parents to offspring

• natural differences in traits among a population of organisms

• an inherited trait that helps an organism survive and reproduce in its environment

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Random changes in genetic material during DNA replication that causes genetic variation

• Mutations

• Adaptations

• Genetic Drift

• Variations

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Why are advantageous (good) traits more likely to be passed onto offspring?

• Because the organisms that have them are more likely to survive and reproduce.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because the organisms that have them will die before they reproduce.

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What caused the finch beaks to look different on the Galapagos Islands?

• The birds were different species.

• Each beak was adapted to finding water.

• Each beak was adapted to a type of food available in its environment

• The birds competed with each other for food.

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A fish had a mutation which caused a change in coloration. After many years, most of the new fish population had this mutation. What most likely caused this?

• Several fish got the mutation at the same time.

• The fish with the mutation was better suited for the environment.

• The fish choose the mutation to have an advantage.

• The mutation was contagious.

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According to natural selection, in a population of frogs

• the strongest frogs will survive and reproduce

• the frogs that are best camouflaged will survive and reproduce

• the frog with traits best suited to the environment will survive and reproduce

• the frogs with the best reflexes will survive and reproduce

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In a population of crickets, there are three different sizes-small, medium, and large. Large crickets are seen easily by predators while small crickets have a difficult time finding food. What will likely have to the population over many years?

• Large crickets will learn to hide from predators.

• There will be more medium crickets.

• Small crickets will mutate.

• There will be more large crickets.

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I formed the theory of evolution by natural selection after my research of various species of finches on the Galápagos Islands. Who am I?

• Reginald Punnett

• Charles Darwin

• Mr. St. Louis

• Gregor Mendel

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Nature has a way of causing organisms that inherit advantageous (good) traits to survive and reproduce more successfully than the ones that don't. This process is known as...

• natural selection

• genetic variation

• adaptation

• overproduction

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