questions-week-5_09

questions-week-5_09 - 1 Deleted because this material was...

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1) Deleted because this material was not presented this quarter. 2) Deleted because this material was not presented this quarter. 3) Suppose that a disease broke out in a population. The disease is lethal to females as infants but had no effect on males. This disease caused the population-wide sex ratio to be 20% females. In this population, the gender of a surviving offspring that would produce the highest number of grandchildren is: (A) Male, (B) Female, (C) Either male or female, (D) Insufficient information (E) none of these. 4) In nature, when the sex ratio is biased toward one sex (at the time that offspring leave parental care) the majority sex is usually: (A) Male, (B) Female, (C) hermaphrodites , (D) Insufficient information (E) none of these. 5) Which of the above plots represents disruptive selection on body size: (A) , (B) , (C) , (D) , (E = None of these) Three lines of Drosophila melanogaster (common fruit fly) were selected in the laboratory for either geotaxis, phototaxis, or chemotaxis. Flies from each line were combined in pairs with those from each of the other 2 lines and scored for positive assortative mating. The data are presented above. 6) The genetic variation for which phenotype would be expected to produce prezygotic reproductive isolation through pleiotropy. (A) Phototaxis, (B) Geotaxis, (C) Chemotaxis, (D) Both Phototaxis and Geotaxis, (E) none of these. 7) Deleted because this material was not presented this quarter.
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8) Deleted because this material was not presented this quarter. 9) Deleted because this material was not presented this quarter. 10) In the graphical model of sex ratio evolution developed in class (displayed below), which of the 4 plotted points (A,B,C, or D) produces the highest fitness for the focal pair? a) point-A; b) point-B; c) point-C; d) point-D; e) points A & B. 11) In the graph above, the starting point (at generation-0) is a population which, on average, is genetically programmed to produce a female-biased sex ratio of 75% females. There is heritable variation for the sex ratio of families. If the population is out-breeding, which data point in generation-1 (open circles; points A,B,C, or D) is expected to evolve? a) point-A; b) point-B; c) point-C; d) point-D; e) points A or D. 12) In a species that with brother-sister mating, which sex ratio (A, B, C, D in the figure above) is expected to evolve? a) point-A; b) point-B; c) point-C; d) point-D; e) points A or D. 13) In a species that is outbred, which sex ratio (A, B, C, D in the figure above) is expected to evolve? a) point-A; b) point-B; c) point-C; d) point-D; e) points A or D. 14) In the figure below how many grand-offspring will be produced, on average, by the focal pair if they produce a son? a) 1; b) 2; c) 3; d) 4; e) 5.
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15) The biological species concept is founded on which biological measure? a)
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This note was uploaded on 05/17/2011 for the course EEMB 102 taught by Professor Oakley during the Spring '08 term at UCSB.

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questions-week-5_09 - 1 Deleted because this material was...

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