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MDCAT
Biology
2023

Biology · Evolution

Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive drills and topic analytics.

Question

When humans purposefully apply selection pressure to populations, the process is known as:

Options
  • A

    Natural selection

  • B

    Evolution

  • C

    Genetic drift

  • D

    Artificial selection

Explanation

When humans purposefully apply selection pressure to populations, such as in breeding programs for plants or animals, it is known as artificial selection. Humans choose which individuals to breed based on desirable traits, which can lead to changes in the population over time.

Artificial selection, or selective breeding, is the process where humans intentionally breed plants and animals for specific, desirable traits. It works by repeatedly choosing parent organisms with desired characteristics to reproduce, which leads to the offspring inheriting those traits. This has resulted in the development of domesticated animals and crop varieties with features like higher yields or specific appearances.  

It's not a correct option. Natural selection is nature's process of prevailing genes in a population that has better chances of survival and reproduction. It's the driving force behind evolution.

It's not correct option. Evolution is the process by which populations of organisms change over generations. It's a fundamental concept that explains the diversity of life on Earth.

It's not correct option. Genetic drift is the sudden change in population 's gene pool as a result of natural disaster or constanople.

It's the correct option. Artificial selection, also known as selective breeding, is the process by which humans intentionally breed plants or animals for particular traits.

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Tagged under Biology · Evolution · 2023