What is Allele _ It’s Meaning and Definition One member of a pair (or any of the series).

What is Allele _ It’s Meaning and Definition One member of a pair (or any of the series).

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What is Allele? – Meaning and Definition

Definition:
An allele is one of two or more versions of a gene. Each individual inherits two alleles for each gene, one from each parent. Alleles are found at the same position (locus) on homologous chromosomes.

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In Simple Terms:

An allele is a variant form of a gene. For example, a gene for eye color may have different alleles such as one for brown eyes and another for blue eyes.

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Key Points:

• Each organism typically has two alleles per gene.

• If the alleles are the same (e.g., AA or aa), the individual is homozygous.

• If the alleles are different (e.g., Aa), the individual is heterozygous.

• Dominant allele: Expresses its trait even if only one copy is present.

• Recessive allele: Expresses its trait only if both copies are recessive.

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Example:

For a gene that controls flower color:

• Allele R = Red (dominant)

• Allele r = White (recessive)

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Would you like a diagram or Punnett square to visualize how alleles work in inheritance?

What is Allele _ It’s Meaning and Definition One member of a pair (or any of the series).

Basic Genetic Concepts & Terms