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- 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
An allele[1] is a variant of the sequence of nucleotides at a particular location, or locus, on a DNA molecule [2] Alleles can differ at a single position through single nucleotide polymorphisms (SNP), [3] but they can also have insertions and deletions of up to several thousand base pairs [4]
- Allele Definition and Examples - Science Notes and Projects
Alleles determine whether a phenotype, or physical trait, is dominant or recessive A dominant allele is expressed even if only one copy is present, while a recessive allele requires two copies (homozygous) for expression
- 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
- Allele - Definition and Examples - Biology Dictionary
An allele is specific variation of a gene Bacteria, because they have a single ring of DNA, have one allele per gene per organism In sexually reproducing organisms, each parent gives an allele for each gene, giving the offspring two alleles per gene
- allele | Learn Science at Scitable - Nature
Alleles contribute to the organism's phenotype, which is the outward appearance of the organism Some alleles are dominant or recessive When an organism is heterozygous at a specific locus and
- How Do Alleles Determine Traits in Genetics? - ThoughtCo
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 influenced by multiple alleles or many genes, leading to a range of phenotypes
- Frequently Asked Questions on Allele Definition - BYJUS
Alleles are a pair of genes that occupy a specific location on a particular chromosome and control the same trait Alleles may appear in pairs or in multiple forms of alleles, which affect a specific trait of the offspring
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