Read each example and identify it with one of the mechanisms that influence gene pools.
Understand the Problem
The question is asking to identify specific biological mechanisms that influence gene pools based on given examples. The user needs to match each statement with the correct mechanism identified from options like mutation, gene flow, genetic drift, and natural selection.
Answer
1. Gene flow, 2. Natural selection, 3. Mutation, 4. Genetic drift
["A zebra migrates to join a different herd of zebras: Gene flow","Competition for sunlight leads to taller trees: Natural selection","The DNA of a snake changes to make its venom stronger: Mutation","A grassfire randomly sweeps through a population of buffalo and kills most of them: Genetic drift"]
Answer for screen readers
["A zebra migrates to join a different herd of zebras: Gene flow","Competition for sunlight leads to taller trees: Natural selection","The DNA of a snake changes to make its venom stronger: Mutation","A grassfire randomly sweeps through a population of buffalo and kills most of them: Genetic drift"]
More Information
These mechanisms influence the genetic diversity of populations and drive evolutionary change over time.
Tips
Confusing genetic drift with natural selection: Remember that genetic drift is random, while natural selection involves adaptive changes.
Sources
- Mechanisms of evolution (article) | Khan Academy - khanacademy.org
- 2.2.4: Additional Mechanisms of Evolution - Biology LibreTexts - bio.libretexts.org
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