An allele, or allelomorph, is a variant of the sequence of nucleotides at a particular location, or locus, on a DNA molecule. Alleles can differ at a single...

In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the...

Lethal alleles (also referred to as lethal or lethals) are alleles that cause the death of the organism that carries them. They are usually a result of...

alleles are being passed from past generations to future ones. They also provide a diagram displaying each individual that carries a desired allele,...

Allele frequency, or gene frequency, is the relative frequency of an allele (variant of a gene) at a particular locus in a population, expressed as a...

A null allele is a nonfunctional allele (a variant of a gene) caused by a genetic mutation. Such mutations can cause a complete lack of production of the...

population genetics, a fixed allele is an allele that is the only variant that exists for that gene in a population. A fixed allele is homozygous for all members...

called alleles. While some genes have only one allele because there is low variation, others have only one allele because deviation from that allele can...

alleles with paternal alleles. These tables can be used to examine the genotypical outcome probabilities of the offspring of a single trait (allele)...

Wright effect, is the change in the frequency of an existing gene variant (allele) in a population due to random chance. Genetic drift may cause gene variants...

Kizuna no Allele (Japanese: 絆のアリル, Hepburn: Kizuna no Ariru) is a Japanese anime television series from Wit Studio and Signal.MD, based on VTuber Kizuna...

as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation...

used to refer to the alleles or variants an individual carries in a particular gene or genetic location. The number of alleles an individual can have...

color-variant of the above patterns, having pheomelanin (O allele) instead of eumelanin (o allele). Though generally a mix of orange and white, the ratio...

TrueAllele is a software program by Cybergenetics that analyzes DNA using statistical methods, a process called probabilistic genotyping. It is used in...

in South America. Melanism is caused by a recessive allele in the leopard, and by a dominant allele in the jaguar. In 1788, Jean-Claude Delamétherie described...

genes are highly polymorphic, which means that they have many different alleles, allowing them to fine-tune the adaptive immune system. The proteins encoded...

of the standard "normal" allele at a locus, in contrast to that produced by a non-standard, "mutant" allele. "Mutant" alleles can vary to a great extent...

recessive manner. It is caused by the presence of mutations in both copies (alleles) of the gene encoding the cystic fibrosis transmembrane conductance regulator...

population genetics, the allele frequency spectrum, sometimes called the site frequency spectrum, is the distribution of the allele frequencies of a given...

are called alleles. DNA sequences can change through mutations, producing new alleles. If a mutation occurs within a gene, the new allele may affect the...

When the new allele is created, a heterozygote containing the newly created allele as well as the original will express the new allele; genetically this...

pair mutation at a specific locus, usually consisting of two alleles (where the rare allele frequency is > 1%). SNPs are found to be involved in the etiology...

In Mendelian inheritance, each parent contributes one of two possible alleles for a trait. If the genotypes of both parents in a genetic cross are known...

Kompetitive allele specific PCR (KASP) is a homogenous, fluorescence-based genotyping variant of polymerase chain reaction. It is based on allele-specific...

Amplified fragment length polymorphism (AFLP-PCR or AFLP) is a PCR-based tool used in genetics research, DNA fingerprinting, and in the practice of genetic...

Allele age (or mutation age) is the amount of time elapsed since an allele first appeared due to mutation. Estimating the time at which a certain allele...

A pseudodeficiency allele or pseudodeficiency mutation is a mutation that alters the protein product or changes the gene's expression, but without causing...

Minor allele frequency (MAF) is the frequency at which the second most common allele occurs in a given population. They play a surprising role in heritability...

and quantified by the frequency of alleles. Two fundamental calculations are central to population genetics: allele frequencies and genotype frequencies...