Allele | Definition, Examples, Facts | Britannica 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 (phenotype) of a particular trait Learn more about alleles in this article
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) present, or the proportion of heterozygotes in the population
Allele - National Human Genome Research Institute "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 into categories Typically, we call them either normal or wild-type alleles, or abnormal, or mutant alleles
What Is an Allele and How Does It Determine Traits? 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
What Is an Allele? Definition, Examples, and Terms 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
Alleles – Definition, Characteristics, Types, Examples 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 alleles for each gene—one from each parent These alleles may either be the same or different