Why is DNA a useful evolutionary clock?
DNA mutations cause organisms to diverge evolutionarily from one
DNA is the only substance in an organism that never changes.
DNA contains no carbon, so it is not affected by radioactive decay.
DNA decays steadily over time once an organism dies.

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

Students commonly confuse saccharomyces cerevisiae and staphylococcus aureus when viewed on a microscope slide how could you microscopically differentiate

The image shows the evolution of a species of fish. a few fish from a population developed different social behaviors and evolved into different species. two fish according to the image, the fish underwent . the new species of fish had mating seasons that were different from that of the original fish. because of the differences in mating seasons, the fish underwent reproductive isolation. this mode of isolation would be .