The following model depicts a Wright–Fisher population. In which of these transitions does genetic drift operate?
a. parentals to very large gamete pool
b. very large gamete pool to gamete pairs
c. gamete pairs to offspring
d. All of the above
e. None of the above
B
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Barnacles on the bellies of whales or on the shells of mollusks are examples of:
A. mutualism B. predation C. commensalism D. amensalism E. parasitism
Wilting of a plant occurs:
a. if the plant cell walls weaken b. when osomotic pressure is reached c. if there is turgor d. when soil water becomes hypotonic e. when soil water becomes hypertonic
The stimulus that causes the parathyroid glands to secrete parathyroid hormone is ________
Fill in the blank(s) with the appropriate word.
How do silk moths attract mates?
A) The females flit around the males in an elaborate dance. B) They build elaborate nests. C) The females secrete pheromones to attract males. D) The males sing a high-pitched song to attract the females. E) The males turn bright red as a visual signal.