Factors Affecting Genetic Variation Answers

In Wisconsin, a very large population of lake trout, in which individuals mate at random, experiences no migration, mutations, nor selective pressure for a number of years. Which of these is most likely to occur in the population?

A population of snakes that eat small rodents enters a new habitat. In the new habitat, there are many species of rodents, and their populations are high because there are few natural predators. What will most likely be the effect on the genetic variation of the snake population?

A population of birds lives on a small island. Another population of the same species lives on the mainland. The distance between the island and the mainland is too great for birds to fly back and forth. Recently, a series of sandbars and tiny islands have formed between the island and the mainland. What is the most likely effect of this?

Which environmental factor would likely lead to an increase in genetic variation in a population of squirrels?

In a population of seals, most of the seals have similar coloring. However, one seal has albinism. This seal is white and is almost completely blind. What is most likely the cause of this difference from the rest of the population?

Which term best describes the difference in colors of the birds below?

In a few generations, this population of beetles changed. Which is the most likely explanation for the change?

Which would most likely result in an increase in genetic variation in a population?

Which of the following is least likely to change the gene pool of a population of chipmunks?

Which environmental factor could lead to a decrease in genetic variation in a population of tuna?