The field of comparative genomics studies the relationship of genetic structures across different biological species compared to genetic analysis in several species of mammals have shown that scientific genetic similarities can be found across physically diverse mammal species this indicates that a. mammalian species cannot undergo evolution changes
b. mammalian species do not share any common ancestors
c. mammalian species all share a common ancestor within the last 100 years
D. mammalian slecies envolve from a distant common ancestor