Practice questions
1. The following Figure depicts real field data on lifetime reproductive success of 140 male elephant
seals. What percentage of the males had fitness larger than zero? (Write a number in the space 2D Graph 1
below).
100
Percent of males
80
Answer:_________%.
60
40
20
0
0 2 4 6 8 10
Number of offspring
2. Which of the following is the best description for artificial selection?
A. Survival of the fittest.
B. Heritable genetic variation among individuals.
C. Selective breeding.
D. Differential fitness of individuals.
3. inexperienced individual bumblebees were tested for their choices between the same numbers
of randomly distributed artificial blue flowers with nectar and yellow flowers with no nectar. Plot the
average predicted proportion of bumblebee visits to the yellow, non-rewarding flowers over 200
flower visits. Draw X-Y coordinates, clearly label the X and Y axes with titles and proper numbers,
and draw a curve. Make sure the curve starts at the right point, ends at the right point, and has a
reasonable shape.
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