Q: What can DNA predict?
Marla Ahlgrimm: People inherit DNA from both of the parents, who, in turn, inherited DNA from their parents and so on. It’s widely accepted that children inherit approximately 50% of their genes from their mother and 50% from their father. These genes share markers with certain populations that can help predict things such as eye color, skin tone, and an individual’s region of genetic origin. But they can also offer insight into more important subjects, such as medical risk.