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  1. Allele | Definition, Examples, & Facts | Britannica

    Dec 22, 2025 · Allele, any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting …

  2. Allele - National Human Genome Research Institute

    1 day ago · "Allele" is the word that we use to describe the alternative form or versions of a gene. People inherit one allele for each autosomal gene from each parent, and we tend to lump the …

  3. Allele - Wikipedia

    A population or species of organisms typically includes multiple alleles at each locus among various individuals. Allelic variation at a locus is measurable as the number of alleles …

  4. ALLELE Definition & Meaning - Merriam-Webster

    The meaning of ALLELE is any of the alternative forms of a gene that may occur at a given locus.

  5. Allele Definition and Examples - Science Notes and Projects

    Nov 29, 2023 · While an allele refers to a variant form of a gene, a gene is a broader term that refers to a unit of heredity in general. A gene is a sequence of DNA that contains the …

  6. What Is an Allele and How Does It Determine Traits?

    Jul 31, 2025 · Alleles are different versions of a particular gene. For instance, a gene might dictate eye color, while different alleles of that gene would specify blue, brown, or green eyes.

  7. Definition of allele - NCI Dictionary of Genetics Terms - NCI

    One of two or more versions of a genetic sequence at a particular region on a chromosome. An individual inherits two alleles for each gene, one from each parent.

  8. ALLELE Definition & Meaning | Dictionary.com

    ALLELE definition: any of several forms of a gene, usually arising through mutation, that are responsible for hereditary variation. See examples of allele used in a sentence.

  9. Allele - Definition and Examples - Biology Online Dictionary

    May 21, 2024 · What are alleles? An allele is a term coined to describe a specific copy of a gene. Learn about allele definition, types, and examples here on Biology Online. Take a quiz!

  10. allele | Learn Science at Scitable - Nature

    An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid …