Molecular clocks
a. take advantage of the fact that all mutations affect the fitness of an organism.
b. take advantage of the fact that all mutations happen at a steady rate.
c. take advantage of the fact that only neutral mutations do not happen at a steady rate.
d. take advantage of known mutation rates to estimate how long ago organisms shared a common ancestor.

As scientists have investigated evolution from a variety of fields, they have found that some of darwin's orginal ideas were inaccurate or incomplete. t explanation provided by evolution was updated each time to reflect the new information they found. what does this suggest about the theory of evolution? it has become a stronger and clearer theory as new information is collected.