GRE Text Completion Question 237

Home > GMAT Test > GRE Text Completion Questions

Next steps

Source: XDF

Natural selection tends to eliminate genes that cause inherited diseases, acting most strongly against the most severe diseases; consequently, hereditary diseases that are_____would be expected to be very_____, but, surprisingly, they are not.

A lethal D perplexing
B untreated E refractory
C widespread F rare

Show Answer

Previous       Next