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Keywords:
Locus,
Gene,
Homologous,
Variant,
Loci
one of two or more alternative forms of a gene that can have the same place on homologous chromosomes and are responsible for alternative traits.
either of a pair of Mendelian characters that may occur in an organism as a consequence of variation at one gene locus.
Any one of two or more genes occupying the same location on a chromosome, determining a given trait (such as eye color, production of a particular enzyme, etc.).
An alternative form of a given gene. For each gene there are two alleles, one on each chromosome of a chromosome pair. One allele is inherited from the mother, the other from the father.
onoe of a group of genes that occur at a given place on a chromosome strand and determine physical characterisitcs.
Any of the alternative forms of a gene that are located together on a chromosome. For autosomal chromosomes, each allele will normally have two copies of the same gene, one inherited from the mother and one from the father.
There are usually two copies of a gene. These two copies are called alleles. In some cases, one or both, alleles will be mutated or altered in some way.
A specific form or possible version of a gene having multiple versions. Alleles may be dominant or recessive.
Most genes exist in two copies (one in inherited from the mother, one from the father). Genes reside on chromosomes. There are 22 pairs of “regular” chromosomes, and one pair of “sex”-determining chromosomes (males are XY; females are XX). For each chromosome pair, there are a series of genes that are paired (one copy of each gene being present on one of the matched chromosomes). Since we inherit one copy of each chromosome from each parent (and thus one copy of each of the genes lined up on the chromosome), we end of with 2 copies, or alleles, of each gene. Alternate forms of the same allele produce variations in the characteristics of inheritance such as, for example, eye color or blood type. If the paired alleles are identical they are said to be homozygous, if they are different they are heterozygous.
( allelomorph) Alternative form of a gene at a locus.
Any one of two or more genes occupying the same locus (precise location) on a chromosome, determining a given characteristic, such as eye color.
A given form of a gene that occupies a specific position or locus on a chromosome. Variant forms of genes occurring at the same locus are said to be alleles of one another.
any one of a number of alternate forms of the same gene.
any alternate form of a gene that can occur at any single locus on a chromosome. All individuals inherit one allele from each parent, but there may be numerous different alleles for a locus (protein coding area) in the world's population. Some alleles are advantageous and predominate, while others are not a occur less commonly.[close window
(a leel´) [Gr. allos: other] • The alternate forms of a genetic character found at a given locus on a chromosome.
The genetic variant of a gene. A gene can be found in different variants in a population, even in the same individual. Alleles are responsible for the different traits of certain characteristics, such as eye and hair color in animals, and flower and seed color in plants. Alleles are also responsible for genetic diseases.
one of two genes, found on a chromosome, that causes specific characteristics, such as eye color
An alternative form of a gene or any other segment of a chromosome.
Short for "allelomorph"; different forms of a gene that can exist at a single locus; the alleles might differ in DNA sequence and also affect the functioning of a single product.
(uh-LEEL) A different form of a gene.
one of multiple forms of a gene; different alleles often have different phenotypic effects.
One of multiple alternate forms of a gene. Your HLA alleles determine which antigens are present on your cells. In the case of the genes that determine your tissue type (See HLA), you inherited one allele for each gene we test for from your mother and the other from your father.
A pair of genes that control a certain trait. Most eukaryotic organisms inherit one allele from each parents.
( al-LEL). Alternative forms of a gene occurring at a given locus (a specific location on a gene on a chromosome). Some genes have only a single allele and others have more. Most loci possess more than one possible allele. Different alleles convey different instructions for the development of a certain phenotype, e.g., different blood types. A population's gene pool consists of the total aggregate of genes in that population at any one time.
One form of a gene: for example, the gene for eye color has alleles for brown, blue, black, and green eyes. An allele may be dominant or recessive.
either of the two paired genes affecting an inherited trait.
One of several forms of the same gene.
One of several alternate forms of a gene which occur at the same relative position (locus) on homologous chromosomes and which become separated during meiosis and can be recombined following fusion of gametes. RT gametes, meiosis. Nagel et al. (eds), 1991
One of two or more variants of a gene or other DNA sequence. Different alleles of a gene generally serve the same function (e.g., code for a protein that affects eye color) but may produce different phenotypes (e.g., blue eyes or brown eyes). Some alleles may be defective and produce a protein that has no function or an abnormal function.
n. (Gr. allelon, one another) one of a pair or more of alternative hereditary characters; a gene which can occupy the same locus as another gene in a particular chromosome.
when more than one version of a gene exists, each version is called an allele. For example, there are multiple alleles for eye color and blood type.
One of a set of alternative forms of a gene. In a diploid cell each gene will have two alleles, each occupying the same position (locus) on homologous chromosomes.
Any one of the alternative form of a gene
A particular structural form of a gene.
one of the alternative forms of a gene having a distinct genotype and often, a distinct phenotype.
One version of a particular gene. Each human cell has two copies of each gene. Those two copies are often different from each other because they have slightly different orders of genetic letters. Each copy is an allele.
One of both genes of the same pair of homologous chromosomes, different or identical. The one has a paternal origin, the other one maternal. Their expression concerns the same phenotypic character. It is the dominant allele which expresses itself. The allele recessive does not express himself but can be transmitted to the progenies.
One of the variant forms of a gene at a particular locus, or location, on a chromosome. Different alleles produce variation in inherited characteristics. For STR markers, each allele is the number of repeats of the short base sequence.
the characteristics of a single copy of a specific gene, or of a single copy of a specific location on a chromosome, is referred to as an allele. For example, one copy of a specific STR region might have 10 repeats, while the other copy might have 11 repeats. These would represent two alleles of that STR region.
one of a number of different forms of the same gene for a specific trait
Slightly different molecular form found in a particular gene.
The form of a gene or other segment of DNA, such as a microsatellite. Example: There are two alleles for the merle gene, M (merle) and m (non-merle). Since genes come in pairs, any given individual will have only one or two types of allele for that gene or microsatellite. Some genes and all microsatellites have multiple alleles.
One of two or more variants of the same gene. ~ See Also: Gene.
variant of a gene or genetic marker. For STR markers, each allele is designated by the number of repeats of the short base sequence.
One of the alternative forms of a particular gene. Each gene of an organism can exist in slightly different forms. Those small differences are responsible for some of the variations that we observe in different individuals within natural populations. Different alleles for genes that produce the blood protein hemoglobin, for example, will affect how well the blood cells will carry oxygen.
Alternative forms of a gene found at the same location on a chromosome pair. A single allele for each locus is inherited separately from each parent. Examples: At a locus for eye color different alleles may result in blue or brown eyes. On chromosome 19, at the apolipoprotein E locus (APOE), an individual may have different alleles (E2, E3, or E4) resulting in different risks to develop late-onset Alzheimer disease.
any of several forms of a gene that are responsible for hereditary variation.
One of several alternate forms of a gene occupying a particular location in a chromosome.
One of a pair, or series, of alternative genes which can lie at a particular position on a chromosome.
Broadly, one of the alternative forms of a gene or genetic marker. More narrowly, the term allele value refers to a count of the number of repeats in an STR (pronounced ess-tee-are). A list of marker labels and their associated allele values constitutes an individual's haplotype.
one of two alternate forms of a gene that can have the same locus on homologous chromosomes and are responsible for alternative traits; "some alleles are dominant over others"
a DNA sequence that can exist in more than one form
a form in which a gene may occur, such as yellow or green peas
a gene located at a specific location on corresponding homologous chromosomes
a gene that has more than one form
a gene that is a member of a set of genes that all belong to the same locus, or location, on a chromosome
a genetic variant form of a locus
a marker of a favorable outcome after transplantation
an alternate form of that gene
an alternative for a particular inheritable characteristic, e
an alternative gene for a particular locus
an inherited gene, present in every nucleated cell of the body
a pair of genes (for the same trait), occupying the same position on chromosome pairs
a pair of genes, in which the more dominant of the two is expressed
a particular version of a given DNA sequence
a point or place on a chromosome
a polymorphic variant of a gene
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