Midterm 1 Sample Questions I will not provide an answer key for these questions. Look up the answers and learn! It’s a great study mechanism. 1. Match figures 1-3 with the mode of selection they are depicting: Figure 1. Figure 2. Figure 3. a. Stabilizing selection b. Disruptive selection c. Directional selection Match the following terms (2-4) with the expected changes in variation provided (a-e): 2. Mutation 3. Gene flow 4. Genetic drift a. Decreasing within-group variation and decreasing between-group variation b. Increasing within-group variation and increasing between-group variation c. Decreasing within-group variation and increasing between-group variation d. Increasing within-group variation and decreasing between-group variation e. No change in variation of any kind 5. The following area(s) of study was/were pivotal in helping to substantiate Darwin’s theories of evolution by natural selection: a. Genetics b. Chemistry c. Physics d. Geology e. A and D 6. There are five baboon species (genus Papio) living in Africa and the Arabian Peninsula each exploiting a different habitat. The species’ boundaries often overlap and hybridization sometimes occurs suggesting a relatively recent common ancestor for genus Papio. For baboons, speciationmay best be described as interaction between the Biological and Ecological Species concepts. What mechanism of speciation would best describe the evolutionary history of baboons? a. a ring species b. parapatric speciation c. sympatric speciation d. allopatric speciation e. none of the above 7. The limbs of all mammals, excluding the hands and feet, have 3 bones. This is an example of a(n) _________________________ trait, within the Class Mammalia. a. analogous b. derived c. homologous d. convergent e. none of the above Refer to the following image for questions 8-9: 8. This bone articulates with the _________________________ at the distal end. a. humerus b. scapula c. tibula and fibia d. patella and tibia e. innominate 9. Which bone is this?a. Right humerus b. Left humerus c. Right femur d. Left femur e. Right scapula 10. A organism with longer limbs has the ability to dissipate heat faster than one with shorter limbs. This is an example of: a. phylogenetic inertia. b. Bergmann’s rule. c. Allen’s rule. d. A and B e. A and
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