The adopted children are more similar to their biological parents than their adoptive parents in their preferences for a flavor of ice cream because they share the same gene, and also because of the heritability of the given trait is high concerning the biological parents.
This could be explained through nature and nurture concept, which states that a person's characteristics and behavior depends on both the nature i.e genes and the environmental factors. An individual carries a 50-50 ratio of both nature and nurture.
