1. What you should have learned.
Chapter 5: Evolution
What you should have learned.

2. 1. Chemical Evolution consists of the formation of the Earth’s early crust and atmosphere, to when ________ form in the seas.
Small organic molecules
Large organic molecules
First protocells
Single-cell prokaryotes

3. 2. Biological evolution, or evolution, is the change in a specie’s genetic makeup when individuals become genetically different.
True
False

4. Harmless Lethal Beneficial
3. Mutations can occur through exposure to radiation or chemicals that alter the DNA, or through random mistakes when DNA is copied. Most mutations are:
Harmless
Lethal
Beneficial

5. 4. If a squirrel receives a dose of radiation in its brain that allows it to think like a human, will it pass on this trait when it mates?
Yes No
Impossible to tell

6. 5. You are capable of becoming a mystery novel writer, but odds are you will pursue another profession. “Mystery writer” is a job in your ________ niche.
Ecological
Fundamental
Habitual
Realized

7. Ecological Fundamental Habitual Realized
6. You are capable of becoming a mystery novel writer, but odds are you will pursue another profession. The other profession is part of your ___________ niche.
Ecological
Fundamental
Habitual
Realized

8. Specialists Generalists Habitualists
7. The oldest species around are usually ____________ species, due to their wide range of niche tolerances.
Specialists
Generalists
Habitualists

9. The human species is evolving a trait to protect against UV rays.
8. Pretend that you have a gene that allows you to reflect all UV rays, preventing skin cancer. You pass on the gene to your children. Which statement is true?
The human species is evolving a trait to protect against UV rays.
Your genes will not dominate unless skin cancer killed off most of the human population.
Your trait will predominate over humankind given around 100-1,000 generations.
The gene makes you and your children the “fittest” to survive.

10. 9. Evolution is said to create a new species when:
They have traits so different from one another that we name them something new.
The organisms with different traits begin fighting and one trait survives.
When members of a population cannot breed with other members to produce offspring which can also reproduce.

11. 10. The greatest times for new species to proliferate is during:
Mass extinctions
Mass depletions
Adaptive radiations
Heavy competition with already successful organisms

12. 11. We may be seeing the start of another mass depletion/extinction caused by human consumption of resources. This isn’t all bad though, because after we push so many species to extinction, new species will fill new or vacated ecological niches. It’ll only take _______ years for that to happen.
10,000
100,000
1,000,000
10,000,000

13. If we could genetically screen humans to determine eligibility for a job, do you think we should?
Yes No

14. If we could successfully and safely clone humans to provide “spare parts,” do you think we should?
Yes No