Which of the following best explains a way that a molecular clock can be used?

the number of dna mutations in an organism is measured over time to determine how long it will take for a new species to evolve.
the number of dna mutations in a species is compared to the number of dna mutations in another species to determine the relative amount of time each species has been evolving.
the number of differences in a specific dna sequence of two species is multiplied by a known mutation rate to determine the number of years of evolution that separate the two species.
the number of differences in the dna sequences of two organisms of the same species is averaged to determine how many years of evolution have occurred.

The number of differences in a specific DNA sequence of two species is multiplied by a known mutation rate to determine the number of years of evolution that separate the two species.

Explanation:

If you have two strands of genotypes here for example:

UGA

UCA

There would be one difference on the strands. then you would multiply it by teh known mutation rate given to you and determine the number of years by dividing by two. (Because it is between two species)

Hope this helps!

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a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves