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Read the following passage, which contains some underlined or numbered words or phrases. Each of the answer choices contains alternatives for the underlines; choose the one that fits best grammatically or stylistically. If you think the original is the best answer, choose Choice ‘A’, or NO CHANGE.

Questions about specific parts of the passage or about the passage as a whole are identified by numbers only, not underlines. These will be associated with specific questions.

Can We Turn a Chimp into a Man?

Created for September 2014

Eichler’s team found that a scant 1.2% of the single-nucleotide sequences differ between a (8) humans and a chimps genome, and 2.7% of the genetic differences between the species are duplications, repeated many times in the genome




human's and a chimp's genome


human and a chimp genomes


humans' and chimps' genome

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