heterozygous phenotype definition
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What is Homozygous? - Definition, Traits & Example Homozygous and Heterozygous. If an organism has two copies of the same allele, for example AA or aa, it is homozygous for that trait. If the organism has one copy of two different alleles, for example Aa, it is heterozygous. Keep in mind that an organism can't simply be 'homozygous,' period. For each of the organism's thousands of genes, it is either homozygous or heterozygous at that genetic locus.
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- 1 Homozygous dominant = AA, homozygous recessive = aa, and heterozygous = Aa.  Genotype is the molecular source of the traits or the genes, and phenotype is the physical appearance caused by the genes.
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Heterozygote advantage In more general terms, overdominance is a condition in genetics where the phenotype of the heterozygote lies outside of the phenotypical range of both homozygote parents, and heterozygous individuals have a higher fitness than homozygous individuals.
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Allele An organism which has two different alleles of the gene is called heterozygous. Phenotypes (the expressed characteristics) associated with a certain allele can sometimes be dominant or recessive, but often they are neither.
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Heterozygous: A Genetics Definition By Regina Bailey. Definition: Homozygous refers to having identical alleles for a single trait. Related Terms: Allele, Genes, Heterozygous. Examples: The gene for seed shape in pea plants exists in two forms, one form or allele for round seed shape (R) and the other for wrinkled seed shape (r).efinition: Homozygous refers to having identical alleles for a single trait. Related Terms: Allele, Genes, Heterozygous. Examples: The gene for seed shape in pea plants exists in two forms, one form or allele for round seed shape (R) and the other for wrinkled seed shape (r).
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Genetics Homozygous (or Purebred) - The genotype for the characteristic has the same genes/alleles (e.g. BB, bb). Heterozygous (or Hybrid) - The genotype for the characteristic has different genes/alleles (e.g. Bb). Wild-type - The most common phenotypes in a population are called the wild-type.
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Heterozygote advantageupdate A heterozygote advantage (heterozygous advantage) describes the case in which the heterozygote genotype has a higher relative fitness than either the homozygote dominant or homozygote recessive genotype. The specific case of heterozygote advantage is due to a single locus known as overdominance.
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MADMAN BIOLOGY Heterozygote: An individual who has two different forms of a particular gene, one inherited from each parent. A heterozygote for cystic fibrosis (CF) has the CF gene on one chromosome 7 and the normal paired gene on the other chromosome 7. Also known as carrier. Search MedTerms:
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- adj. 1. Of or relating to two alleles of a gene that are both fully expressed in a heterozygote. 2. Being one of two or more of the most common or important species in an ecological community and influencing the presence and type of other species in the community.
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What is Homozygous? - Definition, Traits & Example If an organism has two copies of the same allele, for example AA or aa, it is homozygous for that trait. If the organism has one copy of two different alleles, for example Aa, it is heterozygous. Keep in mind that an organism can't simply be 'homozygous,' period.
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Genetic Dominance: Genotype-Phenotype Relationships However, sometimes the heterozygote displays a phenotype that is an intermediate between the phenotypes of both homozygote parents (one of which is homozygous dominant, and the other of which is homozygous recessive). This intermediate phenotype is a demonstration of partial or incomplete dominance.
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- Heterozygous. Definition. adjective. (1) Of, or pertaining to an individual (or a condition in a cell or an organism) containing two different alleles for a particular trait. (2) Having dissimilar alleles that code for the same gene or trait.xample: a zygote having one dominant allele and one recessive allele, i.e. Aa, for a particular trait. Word origin: G. heteros héteros the other of, two, other + different, zygous which pertains to a. Zygote related: forms (heterozygosity). noun
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- A - Humans have 46 chromosomes in each somatic cell and 23 in each sex cell. the situation in which two different alleles for a trait are expressed unblended in the phenotype of heterozygous individuals. Neither allele is dominant or recessive, so that both appear in the phenotype or influence it.Type AB blood is an example.omozygous also refers to a genotype consisting of two identical alleles of a gene for a particular trait. An individual may be homozygous dominant (AA) or homozygous recessive (aa). Individuals who are homozygous for a trait are referred to as homozygotes. See heterozygous.
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What is Heterozygous? - Definition, Traits & Example Codominance. Not all traits follow this dominant/recessive pattern. Some are codominant, meaning that a heterozygote has a phenotype that is different from homozygotes. A phenotype can include the physical characteristics, behaviors, traits and development of an organism. One example of codominance is the Rex gene in rats.
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- Heterozygote: An individual who has two different forms of a particular gene, one inherited from each parent. A heterozygote for cystic fibrosis (CF) has the CF gene on one chromosome 7 and the normal paired gene on the other chromosome 7. Also known as carrier. Last Editorial Review: 5/13/2016.
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Genetics Terms In a heterozygous individual, the effect of a recessive allele is hidden.. For example, if T and t are two alleles of a gene, t is recessive if Tt individuals are phenotypically different to tt individuals. characteristic that occurs when an allele's presence determines the phenotype of a heterozygous individual. For example, if T and t are two alleles of a gene, T is dominant if Tt individuals are phenotypically identical to TT individuals.
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Terms that describe two alleles of the same gene? Confidence votes 38. It sounds like you are referring to homozygous vs heterozygous. If an organism has two identical alleles of the same gene, it is said to be homozygous. If an organism has two different alleles of the same gene, it is said to be heterozygous.
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Familial hypercholesterolemia Heterozygous FH is a common genetic disorder, inherited in an autosomal dominant pattern, occurring in 1:500 people in most countries; homozygous FH is much rarer, occurring in 1 in a million births.
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What are Genotypes? - Definition & Examples When a person has two dominant alleles for a gene (e.g. LL), they are referred to as being homozygous dominant for that trait. If they have two recessive alleles (ll), they are homozygous recessive. If they inherited one of each allele (Ll), they are heterozygous for that trait.n this case, the dad is homozygous dominant, and the mom is homozygous recessive. When their alleles join up, the only possible resulting genotype in their children will be heterozygous (Ll), which is different from either parent.
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- Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white). Carriers are always heterozygous.
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allele 1 When both alleles are the same, the condition is called the homozygous condition; if the alleles differ, then it is the heterozygous condition. 2  When heterozygous, one allele is dominant (A), the other is recessive (a).  Homozygous dominant = AA, homozygous recessive = aa, and heterozygous = Aa.
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Dominance (genetics) At heterozygous gene loci, the two alleles interact to produce the phenotype. Dominance Complete dominance. In complete dominance, the effect of one allele in a heterozygous genotype completely masks the effect of the other.
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- By Regina Bailey. Definition: prefix (hetero-) - other, different. Examples: heterozygous (hetero-zygous) - having two different alleles for a given trait.y Regina Bailey. Definition: prefix (hetero-) - other, different. Examples: heterozygous (hetero-zygous) - having two different alleles for a given trait.
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Genetics Terms The characteristic that occurs when its presence determines the phenotype only when both alleles are the same. In a heterozygous individual, the effect of a recessive allele is hidden. For example, if T and t are two alleles of a gene, t is recessive if Tt individuals are phenotypically different to tt individuals. Or, to put it another way, a phenotype is recessive when it is only present in a homozygous individual.