a scientist has been tracking and studying a population of deer in yellowstone national park. he surveys the…

a scientist has been tracking and studying a population of deer in yellowstone national park. he surveys the population every six months. usually, the population is thriving and has a gene pool with a wide variety of traits. but during one six - month period, an event occurred that affected the population, and when the scientist returned, the amount of genetic variation had decreased significantly. which of the following is most likely the event that occurred to change the population?\n\n○ yellowstone national park expanded its borders.\n○ a population of wolves was introduced into yellowstone national park.\n○ the amount of disease in the deer population decreased.\n○ more grass and shrubs were planted in yellowstone national park.

a scientist has been tracking and studying a population of deer in yellowstone national park. he surveys the population every six months. usually, the population is thriving and has a gene pool with a wide variety of traits. but during one six - month period, an event occurred that affected the population, and when the scientist returned, the amount of genetic variation had decreased significantly. which of the following is most likely the event that occurred to change the population?\n\n○ yellowstone national park expanded its borders.\n○ a population of wolves was introduced into yellowstone national park.\n○ the amount of disease in the deer population decreased.\n○ more grass and shrubs were planted in yellowstone national park.

Answer

Brief Explanations:

Introducing wolves as predators can cause a bottleneck effect. This reduces the deer population size rapidly, leading to a decrease in genetic variation. Expanding park borders, decreasing disease, or adding vegetation would likely not cause such a significant drop in genetic variation.

Answer:

B. A population of wolves was introduced into Yellowstone National Park.