Between A and E : I selected E.
Many of these gene flaws - there are plenty of them, with names like BCR-ABL - are relative newcomers to medical terminology, as are a majority of the new anti-tumor drugs, still in early testing, that are aimed at them.
A. medical terminology, as are a majority of the new anti-tumor drugs, still in early testing, that are aimed at them. --
B. medical terminology like a majority of the new anti-tumor drugs that are still in early testing, and aimed at them. -- modifier parallelism issue "that and -ed" / comma before like is missing. Here we are comparing subject noun to object noun of like, but comma is missing after terminology.
C. medical terminology, as are a majority of the new anti-tumor drugs that are still in early testing, aimed at them. -- ed modifier is modifying testing but in original sentence drugs are aimed at them not the testing as C suggests.
D. medical terminology like a majority of the new anti-tumor drugs, still in early testing, that are aimed at them. -- same error as in B, comma before like is missing.
E. medical terminology, as are a majority of the new anti-tumor drugs, still in early testing, and aimed at them. -- " still in early testing" AND "aimed at them" both acting like adjectives modifying noun drugs. As per
MGMAT past participles, present participles and adjective (used as adjectives) can be considered parallel but here "still in early testing" adverb + preposition sort of modifier. I think this should also be considered parallel.
A and E are very close.. I am not able to identify flaw in E... Please help.
Following is a snippet from
e-gmat's blog::
1. When ‘like + noun’ is separated from the sentence by a comma, the comparison is between the subject of the sentence and the noun following ‘like’.
2. When ‘like + noun’ is not separated from the sentence by a comma, the comparison is between the object of the sentence and the noun that follows ‘like’. Note that this usage is correct only when there is no ambiguity about which two nouns are being compared