Allelic

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Allelic (pronounced: /əˈliːlɪk/) is a term used in Genetics to describe one or several forms of a gene, located at the same position, or locus, on a chromosome.

Etymology

The term "Allelic" is derived from the Greek word "allelon" which means "of each other". It was first used in the context of genetics in the early 20th century.

Definition

In Genetics, an allele is one of two or more versions of a gene that are found at the same place on a chromosome. Alleles can result in different traits, such as variations in eye color, hair color, and other characteristics. Each human has two copies of each gene, one inherited from each parent. These copies may be the same allele or different alleles.

Related Terms

  • Genotype: The genetic makeup of an organism, consisting of both dominant and recessive alleles.
  • Phenotype: The physical and physiological traits of an organism, which are determined by its genetic makeup.
  • Homozygous: Having two identical alleles for a particular gene.
  • Heterozygous: Having two different alleles for a particular gene.
  • Dominant allele: An allele that is fully expressed in the phenotype of a heterozygote.
  • Recessive allele: An allele whose phenotypic effect is not observed in a heterozygote.

See Also

External links

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