Question

which would most likely result in an increase in genetic variation in a population?
an increase in predators and a decrease in food
an increase in predators and an increase in food
a decrease in predators and an increase in food
a decrease in predators and a decrease in food

Explanation:

To determine what increases genetic variation, we analyze population dynamics. Genetic variation thrives when populations grow (more individuals, more mutations/genetic mixing). A decrease in predators (less mortality) and an increase in food (more resources for growth/reproduction) allow the population to expand. Larger populations have more opportunities for genetic changes (e.g., mutations, gene flow, sexual reproduction variation). Other options (with increased predators or decreased food) limit population size, reducing genetic variation chances. So the option with decreased predators and increased food is correct.

Answer:

C. a decrease in predators and an increase in food (assuming options are labeled A - D as per standard, with this being the third option; if original labels differ, adjust to match, but based on the list, the third option: "a decrease in predators and an increase in food")