Evolution

Change over time

• Natural Selection

• Selective Breeding

• Homeostasis

• Evolution

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Tick those answers which are required for natural selection to occur.

• Variation within the offspring

• Variation within the parents

• Minimum population size

• Large numbers of offspring

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The biggest difference between natural selection and artificial selection is that ....

• Natural selection is slower than artificial selection

• Natural selection is natural artificial selection is artificial

• In natural selection the environment dictates which individuals survive and breed, in artificial selection man decides.

• Natural selection requires genetic variation, artificial selection does not.

A physical trait favored by an environmental change can be called an

• adaptation

• extinction

• possibility

• mutation

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Which of the following is a key piece of evidence for human evolution?

• Ancient cave paintings

• Stone tools

• Fossilised human bones

• Old maps

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Which of the following correctly summarizes the physical changes that early humans went through over the past million years or so?

• Brain size increased as jaw size decreased

• Brain size decreased as jaw size increased

• Bipedalism increased as use of tools increased

• Bipedalism decreased as the use of tools increased

When an organism of a species has an adaptation, it will compete for resources better, survive longer and pass that adaptation on to it's offspring. This process is called

• evolution by natural selection

• artificial selection

• inbreeding

• outbreeding

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

• Because they are more likely to survive and reproduce.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because the trait is an acquired phenotype.

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What does Darwin's theory of evolution suggest?

• species change over time

• extinct species are not related to living species

• different species can interbreed

• animals that look alike are most closely related

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_______________, or selective breeding, is one way that humans impact evolution. One example is how the Belgian Blue cow has been bred to have greater muscle mass.

• Artificial selection

• Homologous