Question

explain how similarities and differences in DNA help create molecular clocks? What are they used for?

Answer 1

@satellite73

Answer 2

Mitochondrial DNA stay almost identical over species and only varies ever so slightly. By comparing mitochondrial DNA over species you are able to see how closely related they are and how long it might have taken for the species to evolve.

A slow mutation rate makes it useful for determining evolutionary relationships between ancient species.

(just took a test on it )

Answer 3

Thanks :)

Answer 4

you welcome:D

Answer 5

:)