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Which of the following describes codominance? (2019)

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Question: Which of the following describes codominance? (2019)

Options:

  1. One allele is dominant over another
  2. Both alleles are expressed equally
  3. Neither allele is expressed
  4. One allele is partially dominant

Correct Answer: Both alleles are expressed equally

Exam Year: 2019

Solution: 

Codominance occurs when both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Which of the following describes codominance? (2019)

Practice Questions

Q1
Which of the following describes codominance? (2019)
  1. One allele is dominant over another
  2. Both alleles are expressed equally
  3. Neither allele is expressed
  4. One allele is partially dominant

Questions & Step-by-Step Solutions

Which of the following describes codominance? (2019)
  • Step 1: Understand what alleles are. Alleles are different versions of a gene that determine traits.
  • Step 2: Know what a heterozygote is. A heterozygote has two different alleles for a trait (one from each parent).
  • Step 3: Learn about codominance. In codominance, both alleles are expressed equally in the organism.
  • Step 4: Identify the result of codominance. The phenotype (physical appearance) shows both traits at the same time.
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