Question:
Which one or more of the following statements about evolution is/are true?
Which one or more of the following statements about evolution is/are true?
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To understand evolution:
1. It is a population-level process involving heritable genetic changes.
2. It encompasses both natural selection and sexual selection as mechanisms.
3. Changes in gene frequencies are central to evolutionary processes.
1. It is a population-level process involving heritable genetic changes.
2. It encompasses both natural selection and sexual selection as mechanisms.
3. Changes in gene frequencies are central to evolutionary processes.
Updated On: Jan 24, 2025
- Evolution is change that is heritable across generations.
- Evolution occurs at the level of populations, not species.
- Evolution is a change in gene frequencies through time.
- Evolution occurs through natural selection, but not sexual selection.
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The Correct Option is A, B, C
Solution and Explanation
Step 1: Analyze the definition of evolution.
Evolution is defined as a process that results in heritable changes in a population over successive generations. This involves changes in gene frequencies and occurs at the population level.
Step 2: Evaluate each statement.
Option (A): Correct. Evolution involves changes in traits that are heritable across generations, driven by genetic variation and selection.
Option (B): Correct. Evolution occurs at the population level as it involves changes in gene pools. Species-level changes result from cumulative evolutionary processes in populations.
Option (C): Correct. A fundamental aspect of evolution is the change in allele (gene) frequencies over time within populations.
Option (D): Incorrect. Evolution occurs through both natural selection and sexual selection. Sexual selection is a form of natural selection that involves traits improving mating success.
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