Why is knowledge of the heritability of a trait important for the study of evolution? Solution Hereditary is the passage of genetic information for traits from one generation to another generation throught assexual or sequal reproduction. Evolution is the change in the inherited traits of a population of the organisms, when mutations changes the genetic sequences are inherited across the successive generations. So, the knowledge of heritability of a trait will give an idea about the genetic history and relationship with the ancestors of the organism is important for the study of evolution..