Answer:
D. They float on convection currents in the mantle.
Explanation:
Answer:
Transmission of genetic information from parent to offspring is termed vertical gene transfer. Lateral movement, or movement of genetic information from a donor to an unrelated recipient, is called horizontal gene transfer.
Explanation:
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The molecular clock is a scientific technique which presents a means of estimating evolutionary rates and timescales using genetic data. It uses mutation rate of biomolecules when two or more life forms diverged to estimate the time. Answer is B.