When Christopher Columbus came to the Americas, he randomly chose 3 chickens from Spain to bring along. These 3 chickens were the only chickens to breed in the Americas for hundreds of years. a. natural selection b. genetic bottleneck c. founder effect 2. Organisms better adapted to their environment tend to survive and produce more offspring. Their genetic profile becomes more common in the population over time. a. natural selection b. genetic bottleneck c. founder effect 3. In 2013, Typhoon Haiyan is estimated to have killed over 500 water buffalo in the Philippines. Water buffalo are used in the Philippines to plow crops. Many of the water buffalo that perished were concentrated near farms. These animals are more muscular than buffalo allowed to roam free. a. natural selection b. genetic bottleneck c. founder effect