Henry was studying two populations of the same species of lizards. One population lived on an island and the other lived on the mainland. Both populations were affected by a hurricane that hit the island and the mainland with equal
force. A year later, Henry was testing the gene frequency and saw a decrease in genetic variation in the island
species, but not in the mainland species. Which best describes a conclusion he might have reached?
Gene flow greatly affects small populations, but large populations can recover.
O Genetic drift greatly affects small populations, but large populations can recover.
O Gene flow greatly affects large populations, but small populations can recover.
Genetic drift greatly affects large populations, but small populations can recover.