GMAT Sentence Correction

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Source: GWD

Level: 4

While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.

  • A a new class of mutant genes was discovered by Barbara McClintock, a discovery which led
  • B a new class of mutant genes in corn were discovered by Barbara McClintock, leading
  • C Barbara McClintock discovered a new class of mutant genes, and it led
  • D Barbara McClintock discovered a new class of mutant genes, a discovery that led
  • E Barbara McClintock, who discovered a new class of mutant genes, leading

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