6. In Amish populations the Incidence of a certain type of dwarfism is much higher than those of other populations. What principle explains this? founder effect E none of these both of these bottleneck effect E

The correct answer is: founder effect.<br /><br />The founder effect is a principle in population genetics that explains the higher incidence of a certain type of dwarfism in Amish populations compared to other populations. The founder effect occurs when a small group of individuals establishes a new population, and their genetic makeup becomes the basis for the new population. In this case, the Amish population is a result of a small group of individuals who founded the community, and their genetic makeup, including the genes responsible for dwarfism, became prevalent in the population. This can lead to a higher incidence of certain genetic traits, such as dwarfism, in the Amish population compared to other populations.