Question

Two remote, islands in the Pacific are uninhabited by humans. Both have populations of wild boars. On Island A, all of the animals share the same coloration and snout appearance, but on Island B the boars bear a variety of colors and snouts. What is a possible reason for the difference: a) The boar population on Island A went through a genetic bottleneck and are expressing the founders effect. b) The boar population on Island B went through a genetic bottleneck and are expressing the founders effect. c) The boar population on Island A had greater gene flow with other islands.? d) The boar population on Island B were domestically bred by humans and are now called pigs.?

A typhoon in the southern tip of Japan is more likely to result in which type of evolutionary influence among a certain insect that pollinates flowering trees: a) natural selection b) genetic drift c) neither of the other answers for this question d) both of other answers for this question

Answer 1

Genetic bottlenecks are defined as the events in which the number of individuals in a population is reduced drastically, and Founders effect occurs when there is a lack of genetic variation due to a small mating population. Since the boar’s population on Island A has all the individuals of same type, this means there is little or no genetic variation in the boar population. Hence, it is a case of Genetic Bottle neck and are subsequent experiencing the Founders Effect. Therefore, your answer is (a).

The typhoon at the Southern tip of Japan is a catastrophic event that has the capacity to extinct a species or reduce its population size to a miniscule number. Hence, it is more likely to bring about genetic drift in the insects that pollinate flowering trees. Therefore, your answer is (b).

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