But in the vast world of genes, even a single clue can bring about a change in medical treatments. From natural to artificial selection Genetic screening of embryos has allowed modern medical science to reduce congenital defects, and uncertainty about them, to a minimum.
然而，在浩瀚的基因世界中，雖然只是抓到了一些線索，醫療型態仍因此起了變化...... 從天擇到人擇藉由胚胎的基因篩檢，現代醫學已能將生產過程中的不確定性與不良率減到最低。