An alternative form of a gene that is located at a specific position on a specific chromosome.
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. Therefore, 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. 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. + 2 others found this useful.  Definition of ALLELE. 1. : any of the alternative forms of a gene that may occur at a given locus. 2. : either of a pair of alternative Mendelian characters (as smooth and wrinkled seed in the pea). — al·le·lic \-ˈlē-lik, -ˈle-\ adjective.  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 fraction or percentage. Specifically, it is the fraction of all chromosomes in the population that carry that allele.  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. Since organisms have two alleles for each trait, when the alleles of a pair are heterozygous, the dominant allele trait is expressed and the recessive allele trait is masked. Seeds with the genetic makeup of (YY) or (Yy) are yellow, while seeds that are (yy) are green. 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.  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. In humans, for example, the allele for brown eyes is dominant, and the allele for blue eyes is recessive. 2 one of two or more contrasting characteristics transmitted by alternative forms of a gene. Also called allelomorph. allelic, adj. Allele. 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. Alleles are inherited from parents, two per gene, one from each parent. Therefore, 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. Share. By Regina Bailey. 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. The dominant allele is expressed and the recessive allele is masked. This is an example of complete dominance. In heterozygous relationships where neither allele is dominant but both are completely expressed, the alleles are considered to be co-dominant. Co-dominance is exemplified in AB blood type inheritance. 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. If the alleles are different, they and the organism are heterozygous with respect to that gene. The word allele is a short form of allelomorph (other form), which was used in the early days of genetics to describe variant forms of a gene detected as different phenotypes.
https://carm.org/dictionary-allele http://www.answers.com/Q/What_is_allele http://www.merriam-webster.com/dictionary/allele https://en.wikipedia.org/wiki/Allele_frequency http://biology.about.com/b/2010/05/15/what-are-alleles.htm http://www.ghr.nlm.nih.gov/glossary=allele http://medical-dictionary.thefreedictionary.com/allele https://carm.org/dictionary-allele http://biology.about.com/od/geneticsglossary/g/alleles.htm https://en.wikipedia.org/wiki/Allele
what is an allele