Respuesta :
The correct option is (B) Small populations
Small populations would allow gene frequencies to change by chance.
How gene frequencies can change by chance?
- In small, reproductively isolated populations, specific circumstances can quickly alter gene frequencies, fully independent of mutation and natural selection.
- These changes can only be the result of random events. The population is more susceptible to these arbitrary changes as it gets smaller.
- The term for this phenomenon is genetic drift. Since genetic drift is only statistically effective in small populations, it must have played a significant role in the early stages of human evolution when our populations were small.
Learn more about the Genetic drift with the help of the given link:
https://brainly.com/question/12985618
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