Essay
Suppose that a population composed of 100 individuals existed on an island in the Caribbean Sea.Two different alleles of the A gene were present in this population (a1 and a2)at equal frequency.The following events occurred to this unlucky population.Determine what evolutionary force (mutation,migration,drift,or selection)is represented by each event.In addition,tell the effect of each event on the genetic composition of the population.
a)A devastating fire caused the death of 10 individuals.
b)A disease swept through the island and killed 13 individuals.The a1 confers resistance to the disease.
c)A disease swept through the island killing 13 individuals.Neither a1 nor a2 confers resistance to the disease.
d)A ship containing individuals from a different island containing a1,a2,and a3 alleles landed at the island.
e)The president (whose genotype is a1a1)declared that all a1 individuals had more rights than a2 individuals.All a2 individuals moved to another island.
f)An individual who was working in a cave stumbled upon a new rock and decided to put it in his pants pockets to show his wife.Some of their babies had an a4.
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a)Drift.It could either wipe out an alle...View Answer
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