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\nyellowstone national park expanded its borders.\n\na population of wolves was introduced into yellowstone national park.\n\nthe amount of disease in the deer population decreased.\n\nmore 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\nyellowstone national park expanded its borders.\n\na population of wolves was introduced into yellowstone national park.\n\nthe amount of disease in the deer population decreased.\n\nmore grass and shrubs were planted in yellowstone national park.

Answer

Brief Explanations:

Introducing wolves as predators can cause intense selective pressure on deer. Weaker or less - adapted deer may be preyed upon, reducing genetic variation in the deer population. Expanding park borders, decreasing disease, or adding vegetation would likely not reduce genetic variation but could potentially increase it or have no significant negative impact on it.

Answer:

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