Moderate

In case of incomplete dominance in the f2 generation_______________________?

Correct answer: C. Phenotypic ratio corresponds to the genotypic ratio

  • A. Ratio of phenotypes is 3:1
  • B. Ratio of genotypes is 3:1
  • C. Phenotypic ratio corresponds to the genotypic ratio
  • D. None of the above

Explanation

With incomplete dominance, the heterozygote has its own intermediate phenotype, so the three F2 genotypes produce three phenotypes in the same 1:2:1 proportion. Thus, phenotypic and genotypic ratios correspond, unlike the 3:1 phenotypic ratio of complete dominance.

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