what an allele is
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Allele: A Genetics Definition Definition: An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. These DNA codings determine distinct traits that can be passed on from parents to offspring through sexual reproduction.hen the alleles of a pair are heterozygous, one may be dominant and the other recessive. The dominant allele is expressed and the recessive allele is masked. This is an example of complete dominance.
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allele allele. An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.
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What are alleles? What are some examples? Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits. 1  Since human cells carry two copies of each chromosome they have two versions of each gene.2  These different versions of a gene are called alleles.3  Alleles can be either dominant or recessive. These different versions of a gene are called alleles. 2  Alleles can be either dominant or recessive. 3  Dominant alleles show their effect even if the individual only has one copy of the allele (also known as being heterozygous).
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What is the difference between gene, locus and allele? An allele is a specific copy of a gene. Every organism usually has a given gene, but sometimes the copies are different in their exact sequence of DNA. Humans, as well as virtually all vertebrates and most animals, are diploid, meaning that there are two copies of every chromosome and two copies of every gene.
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Allele Allelic variation at a locus is measurable as the number of alleles (polymorphism) present, or the proportion of heterozygotes in the population. A null allele is a gene variant that lacks the gene's normal function because it either is not expressed, or the expressed protein is inactive.
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- Alleles are the different forms of a gene. Alleles are corresponding pairs of genes located at specific positions in the chromosomes.Together, alleles determine the genotype.Alleles which determine some aspect of the phenotype, the physical appearance of an organism, are said to be coding alleles. When both alleles in a pair are the same, the alleles are homozygous. If the alleles are different, they are heterozygous.In the case of homozygous alleles, the expression of phenotype is usually very straightforward. In heterozygous instances, however, the phenotype of the organism is determined by which allele is dominant, meaning that one allele overrides the other.hat are the different forms of a gene called? already exists. already exists as an alternate of this question. exists and is an alternate of. Fishing Without Nets captures the desperations that cause one of go into a life of piracy. What can viewers expect to learn about the life of piracy that they didn't know before? The different forms a ...
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New study shows hearing loss impacts brain function In those with hearing loss, the compensatory adaptation system significantly reduces the brain’s ability to process sound, which in turn affects a person’s ability to understand speech. And even with mild hearing loss, the hearing areas of the brain become weaker.
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allele Any of the possible forms in which a gene for a specific trait can occur. In almost all animal cells, two alleles for each gene are inherited, one from each parent. Paired alleles (one on each of two paired chromosomes) that are the same are called homozygous, and those that are different are called heterozygous. In heterozygous pairings, one allele is usually dominant, and the other recessive.
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genetics Noun. 1. allele - (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character; some alleles are dominant over others.allelomorph.oun. 1. allele - (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character; some alleles are dominant over others.
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Allele Jump to navigation. An allele is a different form of a gene that is located in a specific place on a chromosome that controls a specific trait and is responsible for genetic variation.herefore, an allele is one of a pair of alleles. Hair color is decided by alleles (sequence variations) of the gene that controls hair color. One allele might possess the trait for blond hair and another allele that of black hair.
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Allele frequency Allele frequency. Allele frequency is a measure of the relative frequency of an allele on a genetic locus in a population. Usually it is expressed as a proportion or a percentage. In population genetics, allele frequencies show the genetic diversity of a species population or equivalently the richness of its gene pool.
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What are alleles? What are some examples? An allele is one of two or more versions of a gene. An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.n allele is one of two or more versions of a gene. An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.
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- An allele is one specific form of the gene, differing from other genes by one or a few bases only and occupying the same gene locus as other alleles of the same gene. The genome is the whole genetic information of organism. Figure 1 illustrates the relationship between DNA, genes and alleles.
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- A gene is a sequence of bases in a DNA molecule, and an allele is an alternative version of a gene that codes for the same feature. c. A gene is a sequence of bases in a DNA molecule, and an allele is an alternative version of a gene that codes for a different, but related, feature.
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Allele frequency Allele frequency. Allele frequency is a measure of the relative frequency of an allele on a genetic locus in a population. Usually it is express ed as a proportion or a percentage.
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- A gene is a heritable factor that controls a specific characteristic of an organism. An allele is one specific form of the gene, differing from other genes by one or a few bases only and occupying the same gene locus as other alleles of the same gene.
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allele 1 one of two or more alternative forms of a gene that occupy corresponding loci on homologous chromosomes. Each allele encodes a phenotypic feature or a certain inherited characteristic. An individual normally has two alleles for each gene, one contributed by the mother and one by the father.ne of two or more alternative forms of a gene at the same site or locus in each of a pair of chromosomes, which determine alternative characters in inheritance. Called also allelomorph. blank allele. an allele which produces an antigen which cannot be detected. null allele. see silent allele (below).
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IB Biology HL : Definition Allele: one specific form of a gene, differing from other alleles by one or a few bases only and occupying the same gene locus as other alleles of the gene. Genome: the whole of the genetic information of an organism.
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- Alleles are alternate forms of the same gene. A gene is the basic  physical unit of heredity that is passed on from a parent to their  children.
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allele The definition of alleles are pairs or series of genes on a chromosome that determine the hereditary characteristics. An example of an allele is the gene that determines hair color.
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Allele Definition. noun, plural: alleles. (genetics). One member of a pair (or any of the series) of genes occupying a specific spot on a chromosome (called locus) that controls the same trait.Supplement. For example, a pair of alleles controlling the same trait, i.e. eye color: one allele codes for blue eyes, another allele for brown eyes.ne member of a pair (or any of the series) of genes occupying a specific spot on a chromosome (called locus) that controls the same trait. Supplement. For example, a pair of alleles controlling the same trait, i.e. eye color: one allele codes for blue eyes, another allele for brown eyes.
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What are alleles? What are some examples? An allele (UK /ˈaeliːl/ ˈæliːl OR /us/), əˈliːl or, allel is one of a number of alternative forms of the same gene or same genetic. locushese chromosomes are referred to as homologous chromosomes. Diploid organisms have one copy of each gene (and, therefore, one allele) on each chromosome. If both alleles are the same, they and the organism are homozygous with respect to that gene.
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Allele An allele is a variant form of a given gene. Sometimes, different alleles can result in different observable phenotypic traits, such as different pigmentation. A good example of this trait of color variation is the work Gregor Mendel did with the white and purple flower colors in pea plants; discovering that each color was the result of a “pure line” trait which could be used as a control for future experiments. However, most genetic variations result in little or no observable variation ...
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Allele: A Genetics Definition An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. These DNA codings determine distinct traits that can be passed on from parents to offspring through sexual reproduction.
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- Alleles are the different forms of a gene. Alleles are corresponding pairs of genes located at specific positions in the chromosomes. Together, alleles determine the genotype.
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What are dominant allele and recessive alleles? A dominant allele is an allele where its phenotype will always be represented when the allele for that gene is present. A recessive allele can be masked by a dominant allele when a dominant and recessive allele are present for the same gene.