Unit 5: Evolution and Natural Selection

Genetic differences between organisms of the same species

• Variation
• Adaptation
• Behavior
• Environment

What is this an example of?

• Aquired characteristics

• variation in a species

• vestigial structures

• DNA studies

The evolution of a new species from an existing species is ____.

• natural selection
• isolation
• speciation
• genetic variation

Most organisms have more offspring than will survive 

• True
• False

Why are advantageous traits more likely to be passed on to the offspring?

• Because parents with those traits can teach their offspring
• Because parents with those traits can surive and reproduce better
• Because parents with those traits care more about their offspring

Green anoles originally lived on an island. A little while later, brown anoles were introduced and began to eat the green anoles.A few of the green anoles were born with more scales on their feet making them better climbers who can escape the brown anoles. After natural selection, which type of green anole would there be more of?

• An anole with 18 scales making it slower to climb.

• An anole with 24 scales making it faster to climb.

Which statement is correct about the evidence in this picture?

• similar bones indicate a similar diet

• similar bones indicate a similar habitat

• similar bones indicate a common ancestor

• similar bones indicate evolution happened quick

What is the most likely cause for the change in the mice population over time?

• hawks eat more dark mice because they taste better

• hawks eat more white mice because they are easier to see

• hawks eat more dark mice because they are easier to see

• hawks eat more white mice because they reproduce better

Which statement best explains adaptations in context of the Theory of Evolution.

• adaptations are critical to the survival of a species by providing ways to adjust

• adaptations allow a single surviving organism to choose its traits and then reproduce

• adaptations are when an organism changes is environment to make it easier to live

• adaptations allow organisms to learn how to survive in any environment

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence