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MDCAT Biology QUESTION #4269
Question 1
The $9:3:3:1$ ratio of the law of independent assortment can be affected by:
  • Genetic drift
  • Small population
  • Gene linkage✔️
  • Gene duplication
Correct Answer Explanation
Gene linkage occurs when two genes are on the same chromosome, so they do not assort independently, disrupting the expected $9:3:3:1$ dihybrid ratio.