People in a large area may possess the same DNA thread because ______ . [br] The

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问题 People in a large area may possess the same DNA thread because ______ . [br] The Molecular Genealogy Research Group is building a database for the purpose of ______ .

选项 A、offering assistance in working out genealogy-related problems
B、solving many issues without relying on traditional written records
C、providing a pedigree chart of at least four generations in the world
D、confirming the assumption that all individuals are of the same origin

答案 A

解析细节题。题干问的是建数据库的目的，解题关键在第二段中：“help in solving many issues regarding genealogies that could not be done by relying only (仅靠…不能解决与宗谱相关的诸多问题)”。A意为“解决宗谱有关的问题时提供帮助”，是正确答案。其余选项均不正确。B意为“无须依赖传统文字资料解决许多问题”；C意为“提供世界至少四代人的家谱”；D意为“核实所有个体都有同样祖先的假设”。

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