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TN-24-14 38. GWD17-Q38: All Y chromosomes in existence today are descended from a single ancestor’s who is thought to have lived about 140,000 years ago. (E)x A. a single ancestor’s who is thought to have lived B. a single ancestor’s who was thought to live C. a single ancestor whom it is thought had lived D. the Y chromosome of a single ancestor who is thought to have lived E. the Y chromosome of a single ancestor whom it was thought had lived A, B, and C are easily eliminated. When it comes down to D and E, what's correct verb form? E, the whom is incorrect, however, I think the verb form in D is incorrect either. |