Practice question
Question
Which of the following statements correctly defines a dominant allele?
Explanation
A dominant allele is expressed in both homozygous (AA) and heterozygous (Aa) conditions.
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Guides and insights connected to this topic
Learn the difference between dominant and recessive alleles, how homozygous and heterozygous genotypes express traits in plants, animals and humans.
Understand the Hardy‑Weinberg principle, its assumptions, the p²+2pq+q² equation, and a worked example involving sickle‑cell anemia.
Explains homozygous and heterozygous genotypes, their differences, and examples of each in genetics.
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