Allele: Alternative form of a genetic locus: a single allele for each locus is inherited from each parent (e.g., at a locus for eye color the allele might result in blue or brown eyes).

 

Related Words

Allele: One of several variants that can occupy a locus on a chromosome

Alleles: Alternate forms of a gene.

Gene Product: The biochemical material, either rna or protein, resulting from expression of a gene. The amount of gene product is used to measure how active a gene is: abnormal amounts can be correlated w . . . View Full Definition

Genetic Illness: Sickness, physical disability, or other disorder resulting from the inheritance of one or more deleterious alleles.

Fingerprinting: In genetics, the identification of multiple specific alleles on a person's dna to produce a unique identifier for that person.

Crossing Over: The breaking during meiosis of one maternal and one paternal chromosome, the exchange of corresponding sections of dna, and the rejoining of the chromosomes. This process can result in an ex . . . View Full Definition

Allogeneic: Variation in alleles among members of the same species.

Backcross: A cross between an animal that is heterozygous for alleles obtained from two parental strains and a second animal from one of those parental strains. Also used to describe the breeding proto . . . View Full Definition

Heterozygosity: The presence of different alleles at one or more loci on homologous chromosomes.

Disease-Associated Genes: Alleles carrying particular dna sequences associated with the presence of disease.