Biology, 25.09.2019 22:30 zanestone12

The disproportionately high appearance of polydactylism among the amish suggests that a. it is a common mutation b. it is a common birth defect in pennsylvania c. it was overrepresented in the gene pool of the original amish settlers d. humans are prone to this birth defect

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The answer is c. it was overrepresented in the gene pool of the original Amish settlers.

A founder effect is a result of geographical separation of a few individuals from the original population. Those few founding individuals will form a new population in which will be present alleles of the few founding individuals. It is probably that in founding individuals, in this example the original Amish settlers, polydactylism was overpresented, and since there was no gene exchanging with other population, polydactylism remained among Amish.

Answer from: fireman59937

letter C

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Answer from: Quest

Competition. interaction among organisms that compete for the same natural resource (food, shelter, water, space) in an ecosystem. predation. an interaction in which one organism kills another for food. predator. prey. symbiosis. mutualisum. commensalisum. parasitisum.

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Answer from: Quest

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat. although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.

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The disproportionately high appearance of polydactylism among the amish suggests that a. it is a co...

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