Scientists studying how organisms have changed over time gather information and evidence from a variety of different fields. describe a study a biochemist might design to determine the relationship between two species that are believed to have a common line of descent.

Construction of a Cladogram

Explanation:

In order to find relationship between any two group of animals, the best is to create a hypothetical tree depicting linked ancestry,  thereby sharing some similar/ common traits. This tree help us to identify the orientation point which led any two organism to have common line of descent. In a cladogram, lines are used to depict branches taking off in different directions with a clade at the end.

Hence, a biochemist must study cladogram