Which type of environment would tend to reduce genetic variation in a population because of evolution by natural selection?(1 point)

Responses

grasslands that are undergoing severe drought
grasslands that are undergoing severe drought

a tropical rainforest that is being deforested for farmland
a tropical rainforest that is being deforested for farmland

an ocean ecosystem that is becoming more acidic
an ocean ecosystem that is becoming more acidic

an old growth forest with trees that are over 1,500 years old

1 answer

Grasslands that are undergoing severe drought would tend to reduce genetic variation in a population because of evolution by natural selection. In this scenario, the harsh environmental conditions (such as prolonged drought) can lead to higher mortality rates among individuals that are less well-adapted to the changing conditions, thus favoring those individuals with traits better suited for survival. Over time, this can result in a reduction of genetic variation as the population may become more homogeneous in terms of the traits that are advantageous in that specific environment.