1. What Determines Our Skin Color?

Human Evolution Leader: Shelly 11.1 Course: BIOL 101 Supplemental Instruction Instructor: Dr. Valenzuela Iowa State University Date: 4/8/15 1. What determines our skin color?

2. Name 2 things that are important for reproductive health: What are the deficiencies of these if there is not enough?

3. True/False: Mitochondrial DNA is inherited from fathers. Why?

4. Draw the phylogenetic tree of humans: Which is the only living species?

5. ______influences human evolution. Complete the chart: Positive selection

Negative selection

Neutral selection

6. As hypothesized by Jablonski and Chaplin, darker skin is advantageous in _____ UV environments because darker skin ______. A. High, reduces vitamin D production B. High, protects folate from degradation C. High, increases rate of folate synthesis D. Low, allows more vitamin D to be produced E. Low, allows more folate to be produced 7. What percentage of DNA sequences do all humans share? A. 0 B. 25 C. 50 D. 75 E. 99

1060 Hixson-Lied Student Success Center v 515-294-6624 v [email protected] v http://www.si.iastate.edu 8. Which human trait evolved most recently? A. Upright walking B. Ability to control fire C. Social communication D. Tool use E. Big brain 9. Which places the eras of Earth in the correct order? A. Paleozoic, Precambrian, Mesozoic, Cenozoic B. Cenozoic, Mesozoic, Precambrian, Paleozoic C. Mesozoic, Precambrian, Cenozoic, Paleozoic D. Precambrian, Paleozoic, Mesozoic, Cenozoic 10. What is the definition of punctuated equilibrium? A. Extinction of 50-90% of all species B. Rapid extinction of a specific species C. Periodic bursts of species change due to sudden environmental change D. Elimination of all individuals in a species 11. Order the following from most specific to least: Family, order, phylum, kingdom, species, class, genus

12. Which domain of life do thermotoga belong to? Halophiles? Spriochetes? Slime molds?