This can allow doctors to understand, for instance, why certain individuals are more prone to cancers than others or why a type of cancer is more aggressive in some people than in others.
किंबहुना, काही संशोधकांच्या मते सर्व रोग, जीन्सच्या कार्यांत झालेल्या बिघाडामुळेच होतात.