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If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant,...

Biology
JAMB 2011

If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of

  • A. codominance
  • B. incomplete dominance
  • C. mutation
  • D. linkage
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Correct Answer: Option B
Explanation

In incomplete dominance, neither allele for a trait is completely dominant, resulting in a heterozygous offspring that displays a blended phenotype between the two parent traits. For example, crossing a red flower plant with a white flower plant will produce pink flower plants. This differs from complete dominance where the dominant allele masks the recessive one, and from codominance where both alleles are expressed. 

(see diagram above)

There is an explanation video available below.


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Explanation Video

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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