Natural Selection & Evidence for Evolution

The trees that peppered moths used to live on were once white, but became covered in soot from coal factories. Which moth will be more successful in this environment?

• dark moth

• light moth

• both will be equally successful

• neither will be successful

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Common decent is the theory that all life on Earth came from one common ancestor. Which of the following are true (2)?

• Common decent is a directly observable fact.

• Common decent is a conclusion made from a huge collection of observable facts.

• Common decent is the basis for the Theory of Evolution.

• Common decent suggests humans evolved from apes.

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What is decent with modification?

• When the offspring of an organism show genetic variation in comparison to their parents

• When the offspring of an organism have favorable traits due to needing them in order to survive

• When only modified offspring are able to survive

• When offspring have better manners than their parents

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The dark moth came about because...

• The trees became dark due to pollution so the white moth needed to change color

• By chance the dark moth had a modified gene that caused it to be dark colored

• The white moth became covered in soot from the factories and turned a dark color

• Due to the soot in the air, the white moth mutated and became dark colored

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Which are valid lines of evidence for the Theory of Evolution? (4)

• Fossil records

• DNA analysis

• Comparative anatomy

• Embryology & Development

• Looking at the members of a family over 3 generations

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Which of the following explain why we DO NOT have a complete fossil record of all life that’s ever lived? (3)

• Fossil formation requires the physical and biological conditions to be just right, which is quite rare

• Fossils must be extremely close to the Earth’s surface to have a chance of being found.

• Fossils can be destroyed when rocks erode, melt, or change composition.

• All the fossils from millions of years ago do not exist anymore

• We do have a complete fossil record, as scientists have found millions of fossils over the years

Extinctions occur because the environment changes.

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These limbs provide evidence of common ancestry because they....

• have the same basic structure

• Perform the same function

• Are the same size

• Are parts of mammals

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The cave fish and minnow are related to each other but the cave fish is blind and only has the remnants of an eye. What type of structure is this?

• homologous

• analogous

• vestigial

• convergent

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All these organisms have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals

• They live in similar environments

• They have a common ancestor

• All organisms resemble humans

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