Tutorial for U4.14 - Evolutionary mechanisms (ms).pdf -...

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Section One :: MCQ1[WACE HBS3 2011, Q5]The Dunkers are a small religious group that moved from Germany to Pennsylvania, in the UnitedStates of America, in the 1700s. They mostly choose to marry only the members of their owncommunity. Today, the Dunkers are genetically different from other populations, including those inGermany.Which of the following are the most likely explanations for the genetic uniqueness of the currentDunker population?(a)natural selection and mutation(b)natural selection and genetic drift(c)barriers to gene flow and genetic drift(d)barriers to gene flow and speciation
2[WACE HBS3 2007, Q8]Achondroplasia is an autosomal dominant trait in humans that results in a form of dwarfism. In somecases a child with achondroplasia is born to parents who have normal height.The most likely reason for the appearance of the child with achondroplasia is that
3[WACE HBS3 2007, Q13]Darwin’s concept of Natural Selection is closest in meaning to which of the following statements?

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