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Biology Medium CSS FPSC PPSC Uploaded: 14 Jul 2026

What is the term for two different alleles for a trait in an organism?

  • A Homozygous
  • B Codominant
  • C Dominant
  • D Heterozygous
Correct Answer: Option D — Heterozygous
Explanation:
Heterozygous describes an organism that has two different alleles for a particular gene one dominant and one recessive with the dominant allele typically expressed in the phenotype.
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