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

    Feb 5, 2026 · 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 the expression …

  2. 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 (polymorphism) …

  3. Allele Definition and Examples - Science Notes and Projects

    Nov 29, 2023 · Get the allele definition and examples in genetics. Learn about the difference between alleles and genes and their location on chromosomes.

  4. Allele - National Human Genome Research Institute

    2 days 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 alleles …

  5. 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. Humans inherit …

  6. What Is an Allele? Definition, Examples, and Terms

    Oct 31, 2025 · While a gene dictates a trait, like flower color, the different alleles are what determine the possible expressions of that trait, such as purple or white flowers.

  7. Minute to Understanding: What is an allele? - The Jackson Laboratory

    Learn about alleles—matching genes from each parent that influence traits like eye color, disease risk, and medication responses. Discover how dominant and recessive alleles shape our genetic makeup.

  8. Alleles: Definition, Types, Features, Applications - Microbe Notes

    Aug 3, 2023 · A key component of genetics, alleles are crucial for comprehending genetic variation and inheritance patterns. They are distinct gene variants that reside at the same chromosomal locus …

  9. 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.

  10. Allele: Definition, Examples & Key Differences Explained - Vedantu

    Alleles determine an organism's observable traits (phenotype) by controlling the production of specific proteins. The combination of alleles an organism possesses is its genotype.