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How does the molecular clock work?
It analyzes the brain functionality of two different species.
It examines and compares the physical characteristics of two different species.
It illustrates relationships between two different species.
It compares the number of mutations that exist in the DNA of two different species.
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The correct choice is: It compares the number of mutations that exist in the DNA of two different species.
Explanation: A molecular clock uses the rate at which genetic mutations accumulate to estimate how long ago two species diverged. By comparing DNA (or protein) differences and applying an estimated mutation rate, scientists can infer divergence times and help reconstruct evolutionary relationships.
Explanation: A molecular clock uses the rate at which genetic mutations accumulate to estimate how long ago two species diverged. By comparing DNA (or protein) differences and applying an estimated mutation rate, scientists can infer divergence times and help reconstruct evolutionary relationships.
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