MCQ on Incomplete Dominance with Answers (PDF)







Incomplete dominance is a form of inheritance where the heterozygote exhibits an intermediate phenotype between the two homozygous forms. Unlike complete dominance, neither allele is fully dominant, and both contribute to the resulting phenotype. This phenomenon provides an important example of how genetic interactions can result in a blending of traits. This is an MCQ on Incomplete Dominance with Answers. You can download the quiz as PDF from the results page.

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MCQ on Incomplete Dominance

1. 
Which of the following best defines incomplete dominance?

2. 
In snapdragons, a cross between red-flowered (RR) and white-flowered (rr) plants produces pink-flowered offspring. What is the expected phenotypic ratio in the F2 generation?

3. 
Incomplete dominance in a monohybrid cross results in a phenotypic ratio of:

4. 
Which of the following is an example of incomplete dominance in animals?

5. 
If a plant with red flowers (RR) is crossed with a plant with pink flowers (Rr), what proportion of the offspring will have pink flowers?

6. 
In incomplete dominance, what would be the result of crossing two heterozygous organisms?

7. 
In humans, wavy hair is an example of incomplete dominance between curly and straight hair. If two wavy-haired individuals have children, what is the probability that their child will have wavy hair?

8. 
In a population where incomplete dominance governs flower color, what would be the genotype of an individual with pink flowers, assuming red (R) and white (r) are the parental alleles?

9. 
Which of the following genetic phenomena can be distinguished from incomplete dominance by the fact that both alleles are fully expressed in the phenotype?

10. 
In incomplete dominance, if a heterozygote is crossed with a homozygous recessive, what is the expected phenotypic ratio of the offspring?

mcq on incomplete dominance

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