Choose the true statements about molecular clocks.
A. Ultimately, all molecular clocks depend on the rate of DNA mutation and DNA repair mechanisms.
B. The rate of a molecular clock for a given DNA character might vary depending on how constrained the character is by natural selection.
C. Molecular clocks can be calibrated using fossil evidence.
D. All molecular clocks tick at the same rate.
Answer: C
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Achondroplasia
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Which of these statements about hypertension
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Occasionally, chromosomes fail to separate during meiosis, leading to daughter cells that have an abnormal number of chromosomes. This phenomenon is called
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