key_quiz_week5 - detrimental in the homozygous state is a...

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Name____________________________ Date _____________________________ BIO 311D Discussion 1. Why are smaller extremities advantageous at cooler climates? The bigger the extremities, the more surface area. As a result, the surface area/volume ratio also increases with bigger extremities. When this ratio increases, the heat is lost faster. So, it is better to have smaller extremities to keep the ratio as small as possible. 2. The phenotype with the greatest selective advantage (fitness) in a phenotypically variable population is the one that _______ a. Is most common b. Has the greatest longevity c. Inbreeds the least d. Leaves the most offspring e. Has the largest body size 3. The fact that Hb s allele has remained in African populations even though it is
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Unformatted text preview: detrimental in the homozygous state is a result of: A) Migration B) artificial selection C) Heterozygote advantage D) Directional selection E) none of the above 4. Which of the following examples would illustrate Bergmanns rule? a. The decrease in mouse body size found as population size increases b. The increase in puma weight found as you move from the equator toward the north pole c. The increase in the length of rabbit ears as you move from North America toward the equator d. None of the above 5. The moth example from lecture is an example of which type of natural selection? A) Stabilizing selection; B) Directional selection; C) Industrial selection; D) Disruptive selection....
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This note was uploaded on 01/30/2012 for the course BIO 311D taught by Professor Reichler during the Spring '08 term at University of Texas at Austin.

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key_quiz_week5 - detrimental in the homozygous state is a...

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