Final answer:
Descriptive representation focuses on the demographics and characteristics of representatives, while substantive representation looks at the impact of minority representation on policy-making.
Step-by-step explanation:
Descriptive representation refers to the extent to which a body of representatives represents the descriptive characteristics of their constituencies, such as class and race. On the other hand, substantive representation refers to the symbolic significance of having minority representation present in a legislature. This means that descriptive representation focuses on the demographics and characteristics of the representatives, while substantive representation looks at the impact and influence that minority representation has on policy-making and decision-making.