The answer is C. Solar System, Milky Way, Universe
The number of years of divergence from a common ancestor =300,000 years.
<h3>What are mutations?</h3>
Mutations are changes that occur in the DNA of living organisms.
Mutations can be used as molecular clocks if they occur at a constant rate.
Considering the nucleotide substitutions occur by mistake in a segment of ribosomal RNA at a constant rate of one substitution every 100,000 years.
The ribosomal RNA of the two modern-day species have six differences in their sequences.
Number of years of divergence = 6/2 * 100000 = 300,000 years.
In conclusion, changes that occur in nucleotide sequences are known as mutations.
Learn more about mutations at: brainly.com/question/12572634
#SPJ1
