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

    Mar 17, 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 …

  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. 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 …

  5. Allele - National Human Genome Research Institute

    3 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 …

  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. Alleles – Definition, Characteristics, Types, Examples

    Sep 9, 2024 · Each gene can exist in multiple forms, and these different forms are called alleles. They occupy specific locations, known as loci, on chromosomes. Every individual typically inherits two …

  8. How Do Alleles Determine Traits in Genetics? - ThoughtCo

    Aug 21, 2019 · Alleles are different forms of a gene and they determine unique traits in offspring. Traits can be dominant or recessive based on which allele is expressed in the organism. Some traits are …

  9. 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.

  10. 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!