Unit 4 Lesson 3: Theory of Natural Selection

Drawn observed several different types of finches.  Why are there so many different types?

• Finches live in different places, but eat the same food.
• Finches live in the same place, but eat different types of food.
• Finches live in different habitats and eat different types of food.
• Finches are found all over the world.

The differences among a species, like different bird beaks, are called

• genes.
• variations.
• traits.
• theories.

Organisms with the most beneficial traits will survive.  This is commonly known as

• theory of evolution.
• variations.
• survival of the fittest.
• ecosystems.

This scientist developed the theory of evolution as he studied the finches.

• Charles Darwin
• Isaac Newton
• Albert Einstein
• Marie Curie

Behavioral changes of individuals of a species that allow for better survival. (Acquired traits)

• Variation
• Adaptation
• Behavior
• Environment

Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

What are the most studied animals in the galapagos?

• Finches
• Tortoises
• Turtles
• Lizards

What is the advantage of having different shaped beaks?

• To look different from other species.
• To be able to eat the food readily available in the environment.
• To protect itself against predators.
• To protect itself against prey.

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.

Do organisms "decide" to evolve and change?

• Yes, they know they need to change to survive 
• No, they change because of natural selection