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PIMSO 2025 - Science - Secondary 1 - National Round Question 6

PIMSO Science · PIMSO 2025 - Science - Secondary 1 - National Round

Question 6

Which of the following accurately describes the relationship between a dominant and a recessive allele?

Editorial convention: assume complete dominance.
  1. The dominant allele physically alters the recessive allele so that it cannot be expressed.
  2. The dominant allele blends with the recessive allele to produce an in between trait.
  3. The dominant allele is expressed however, the recessive allele is unaltered.
  4. The dominant allele is more common in the species population than the recessive.