2. A population of flowers was separated into two subpopulations when a new river cut through the plain in which they were growing. The number of interbreeding events per year for the two subpopulations of flowers is shown in this graph. Twenty-four years after they were separated, can you conclude that the two subpopulations of flowers have become new species? Justify your answer. Number of interbreeding events 120 100 80 60 40 20 0 6 12 18 Years after new waterway 24

2. A population of flowers was separated into two subpopulations when a new river cut through the plain in which they were growing. The number of interbreeding events per year for the two subpopulations of flowers is shown in this graph. Twenty-four years after they were separated, can you conclude that the two subpopulations of flowers have become new species? Justify your answer. Number of interbreeding events 120 100 80 60 40 20 0 6 12 18 Years after new waterway 24

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter19: The Evolution Of Populations

Section: Chapter Questions

Problem 8RQ: When male lions reach sexual maturity, they leave their group in search of a new pride. This can...

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A characteristic that exhibits smooth changes in populations distributed along a geographical gradient is called a: a. ring species. b. hybrid. c. cline. d. hybrid breakdown. e. subspecies.
When male lions reach sexual maturity, they leave their group in search of a new pride. This can alter the allele frequencies of the population through which of the following mechanisms? natural selection genetic drift gene flow random mating
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1. A drought occured reducing the size of a large lake that was home to a species of aquatic snail in a very short period of time. The remaining population saw a drastic reduction in the gene pool and faced new selective pressures due to the lack water. Those snails that were drought tolerant sirvived and became a new species. This an example of what? 2. Chefs attract their mates by cooking a romantic meal, while musicians attract their mates by writing a romantic song. If a chef encounters a musician and fixes them a romantic meal, mating does not occur because musicians do not like romantic meals. This is an example of what?
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