Multiple Choice
Which of the following best describes the risks associated with genetics research?
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3. Extensions to Mendelian Inheritance
Overview of interacting Genes
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Which type of clock uses differences in DNA to determine when organisms diverged from a common ancestor?
A
Molecular clock
B
Epigenetic clock
C
Circadian clock
D
Biological clock
Verified step by step guidance1
Understand that the question is asking about a method to estimate the time since two organisms diverged from a common ancestor based on genetic information.
Recall that a molecular clock uses the rate of mutations or differences in DNA sequences to estimate the time of divergence between species.
Recognize that other clocks mentioned, such as epigenetic, circadian, and biological clocks, relate to different biological processes and do not measure evolutionary divergence.
Identify that the molecular clock concept relies on the assumption that mutations accumulate at a relatively constant rate over time, allowing scientists to calculate divergence times.
Conclude that the correct type of clock for determining divergence based on DNA differences is the molecular clock.
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