A population of 2000 mice on an island includes 40% white-furred individuals, 50% brown-furred individuals, and 10% black-furred individuals. A storm hits the island and decimates the population, leaving about 100 individuals, of which 75 are brown and 25 are white. The fur color of this population remains stable at about 75% brown and 25% white over the next several generations. -‐has evolution occurred? If so, by what process(es)? -‐has natural selection occurred? Why or why not? ­‐Is the current population in Hardy-Weinberg equilibrium? yes no can't tell. Explain your answer

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Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.