Answer: CRISPR TECHNOLOGY!!!
CRISPR is a new kind of technology that effectively writes out an entire genome, and helps us edit it as well. This kind of technology can be applied in genetic diseases; it can help us find a correlation between different errors in our genome that cause genetic diseases like Parkingson's, Huntington's, or sickle-cell anemia, and eradicate the errors in the genetic sequence. This could change the way we look at diseases and even cancer, since some forms of cancer can be connected with genetic errors and hereditary patterns.