Biology CLEP Prep Practice Exam

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Prepare for the Biology CLEP Test with comprehensive flashcards and multiple choice questions. Each question comes with explanations and hints to ensure a full understanding. Boost your exam readiness today!

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What is the current scientific theory proposed to explain the origin of life on Earth?

Genetic Drift
Convergent Evolution
Abiogenesis
Adaptive Radiation

The correct answer is: Abiogenesis

Abiogenesis is the current scientific theory proposed to explain the origin of life on Earth. It suggests that life arose spontaneously from non-living matter through natural processes. This explanation is supported by several lines of evidence, including chemical experiments that demonstrate how basic building blocks of life can form from inorganic compounds, as well as observations of simple organisms arising from non-living matter in certain conditions. Therefore, the other options are incorrect as they either refer to different evolutionary processes or do not address the question of the origin of life. Genetic drift refers to random changes in the frequency of traits in a population, convergent evolution refers to similar traits evolving separately in different species, and adaptive radiation refers to the divergence of species into different niches.