What adds genetic variation, which is essential for evolution

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

Albinism is an inherited genetic disorder. explain what it is meant by inherited genetic disorder