Recessive alleles are-

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Study for the 9th Grade Biology SOL Test. Prepare with flashcards and multiple choice questions, each featuring hints and explanations. Get ready for your exam!

Multiple Choice

Recessive alleles are-

Explanation:
Allele notation uses case to show dominance. Recessive alleles are written in lowercase because their trait is masked by a dominant allele and only appears when two copies are present. For example, if A is dominant and a is recessive, the genotype AA or Aa shows the dominant trait, while aa shows the recessive trait. That’s why recessive alleles are represented with lowercase letters. Uppercase would indicate a dominant allele, and mixed case or boldface aren’t used in this standard notation.

Allele notation uses case to show dominance. Recessive alleles are written in lowercase because their trait is masked by a dominant allele and only appears when two copies are present. For example, if A is dominant and a is recessive, the genotype AA or Aa shows the dominant trait, while aa shows the recessive trait. That’s why recessive alleles are represented with lowercase letters. Uppercase would indicate a dominant allele, and mixed case or boldface aren’t used in this standard notation.

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