unit 7 natural selection/ evolution

Evolution & Natural Selection

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Multiple Choice

The formation of new and distinct species in the course of evolution

• artificial selection

• speciation

• breeding

• non-random mating

Multiple Choice

Who is credited with the discovery of Natural Selection?

• Charles Darwin

• Charles Xavier

• Charles Dickens

What Makes Evolution Happen?

• Competition

• Specialization

• Variation

• Selection

What Provides Evidence for Evolution

• Fossils - Depth and Structures

• Molecular Biology

• Comparative Anatomy

• Species locations

Natural Selection

Specialization for Environments

• 3 turtles of one species

• different specializations for feeding

• How???

Poll

How did the turtles change over time?

• They grew longer necks to get food

• Over years only the ones more equipped to get food survived to reproduce

• A random mutation enabled survival

Selection & Breeding

• Selective breeding means that only the organisms with desirable traits will live to reproduce or be given the opportunity

• Artificial selection is when humans dictate the traits that are desired (dogs, cats, horses, cows and so on)

• Nature does a fantastic job of doing this, but it cannot happen with out genetic diversity.

Multiple Select

Select all answers that influence Evolution of organisms.

• Gene Flow

• Natural Selection

• Genetic Drift

• Aliens

AP Bio Darwin and Evolution

By Adam Lykens

Open Ended

What do you know about about evolution?

Open Ended

What is natural selection?

Open Ended

What is artificial selection?

Multiple Choice

Which of the following was considered a flaw in Lamark's claims about evolution?

• Acquired traits are not passed on to offspring.

• Disease and famine are inescapable because populations grow faster than food supplies.

• Traits are inherited from parents to offspring.

• Adaptation to the environment is a primary cause of evolution.

Multiple Select

Which of the following was an observation Darwin described in his book "The Origin of Species?"

• Members of a population may vary greatly in their traits.

• Traits are inherited from parents to offspring.

• All species are capable of producing more offspring than their environment can support.

• Due to lack of food/resources, many offspring do not survive.

Multiple Select

Which 2 of the following are inferences are necessary to support Darwin's theory?

• Organisms with traits that favor them to survive and reproduce in their environment will leave more offspring.

• The unequal ability of individuals to survive and reproduce will lead to accumulation of favorable traits in the population over generations.

• Disease, famine, homeless, and war are inevitable because human populations will exceed that availability of food/resources.

• Body parts used by organisms will continue to grow, and get passed on to offspring while unused parts don't grow and are not passed on to offspring.

Open Ended

Give an example of artificial selection.

Open Ended

Describe a scenario in which natural selection is occurring.

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