ideas about evolution

a group of organisms that share similar characteristics and can reproduce and reproduce fertile offspring

• birds

• animals

• species

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a mule is NOT a species because

• it is part horse and part donkey

• it can't reproduce fertile offspring

• it is just another donkey breed

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Much of Charles Darwin's theories were due to his comparison of organisms in which 2 locations?

• South American to the Galapagos Islands

• North America to South America

• Galapagos Islands to Mexico

• England to the Galapagos Islands

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Darwin's theory is called Evolution by _______ and has 4 steps

• environmental changes

• natural selection

• new species

• tectonic movement

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The physical trait or feature in finches that Darwin theorized was the most affected by evolution was:

• feet size

• feather color

• wing span

• beak shape

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The steps of natural selection in order are:

• genetic variation, overproduction, struggle to survive, successful reproduction

• overproduction, genetic variation, struggle to survive, successful reproduction

• successful reproduction, struggle to survive, genetic variation, overproduction

• overproduction, struggle to survive, successful reproduction and genetic variation

According to Darwin, what was the key factor about each island that determined which finches were able to survive

• flying time and ability

• food available

• amount of fresh water available

• temperature and rainfall

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Variations between individuals are key to Darwin's theory. A specific variation that makes an organism better suited to its environment is a(n)

• isolation

• observation

• mutation

• adaptation

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Organisms with traits that best suited to their environment are more likely to survive and reproduce. This theory is called:

• Genetic selection

• Selective breeding

• Natural Selection

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Which natural selection step is described? A spider lays thousands of eggs.

• overproduction

• genetic variation

• struggle to survive

• successful reproduction