[单选题]The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.


Knowing our genetic makeup can help us gauge whether or not we may be stricken by a particular illness, such as cancer. Even before birth, we are able to do genetic screenings to determine what a child's genetic disorders will be. In addition to predicting genetic predispositions toward diseases, gene therapies may provide new treatments or cures for serious diseases.

Great progress in （） engineering.