【GMAT考满分逻辑CR题库】Biology student: Microsatellites are repeated p_真题_答案

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Biology student: Microsatellites are repeated patterns of two, three, or four nucleotides within a DNA sequence that are unique to a particular lineage. Therefore, after breeding one hundred generations of fruit flies, we will be able to trace any particular fruit fly to its ancestor using the presence of certain microsatellites within its DNA.

Which of the following, if true, would most strengthen the student’s argument?

A
In some groups of fruit flies with identical microsatellites, not every fruit fly shares the same ancestors.
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B
The series of nucleotides that compose a microsatellite sometimes appears by chance.
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C
The microsatellites do not produce any harmful outcomes, and therefore cannot be eliminated from the genome via natural selection.
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D
Many populations of fruit flies in different places across the world share the same microsatellites.
分析该选项
E
Biologists are occasionally capable of determining whether a fruit fly possesses the same microsatellites as its ancestor.
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正确答案: C

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