Heterozygous Advantage Definition
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- 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.
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Allele: A Genetics Definition When 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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heterozygous heterozygous-having dissimilar alleles at corresponding chromosomal loci; heterozygous for eye color. genetic science, genetics-the branch of biology that studies heredity and variation in organisms.
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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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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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heterozygous homozygous-having identical alleles at corresponding chromosomal loci; these two fruit flies are homozygous for red eye color. genetic science, genetics-the branch of biology that studies heredity and variation in organisms.
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What does it mean to be homozygous dominant, heterozygous, or homozygous recessive? Best Answer: Heterozygous is when you have 2 different alleles for a certain characteristic: e.g. You could have a gene for brown eye colour on one chromosome and a gene for blue eyes on the other. In this case the dominant gene of the 2 would be expressed in the individual. Homozygous dominant is when the 2 alleles are the same and they are the dominant form of the gene. e.g. 2 brown eye genes BB Homozygous recessive is when the 2 alleles are the same and are the recessive form of the gene bb. Source(s): Chelsey Kimble · 7 years ago.
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Heterozygous: A Genetics Definition Organisms have two alleles for each trait. When the alleles of a pair are heterozygous, one is dominant and the other is recessive. Using the previous example, round seed shape (R) is dominant and wrinkled seed shape (r) is recessive.rganisms have two alleles for each trait. When the alleles of a pair are heterozygous, one is dominant and the other is recessive. Using the previous example, round seed shape (R) is dominant and wrinkled seed shape (r) is recessive.
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- 1. (Genetics) genetics (of an organism) having identical alleles for any one gene Compare heterozygous: these two fruit flies are homozygous for red eye colour. (ˌhoʊ məˈzaɪ gəs, ˌhɒm ə-). (-zaɪˈgɒt ɪk). adj.
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- From Wikipedia, the free encyclopedia. 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.
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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.hile carriers have the dominant/recessive genotype for a given gene, they only show the phenotype caused by the dominant version of that gene. If someone has the phenotype caused by the disease allele of a gene, we say they are affected. People who do not have that phenotype are unaffected.
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heterosis het·er·o·sis. The beneficial effect on the phenotype of crossing (hybridization) on growth, vigor, and physical or mental qualities in a strain of plants or in animal stock, as measured by the difference between the midparent mean phenotype and that of F 1; also referred to as hybrid vigor.et·er·o·sis. The beneficial effect on the phenotype of crossing (hybridization) on growth, vigor, and physical or mental qualities in a strain of plants or in animal stock, as measured by the difference between the midparent mean phenotype and that of F 1; also referred to as hybrid vigor.
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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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What is Heterozygous? - Definition, Traits & Example For example, a gene that makes the brown pigment in your eyes might come in a regular (brown) version and a mutant (blue) version. Because you have two copies of your DNA (one from Mom and one from Dad), you might end up with two different alleles of the same gene. In that case, we would say you are heterozygous.
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Definitions &Translations Heterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring.The adjective derived from heterosis is heterotic. An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents.eterosis, hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring.
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Heterozygous 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.
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- Homozygous dominant is a genotype that consists of two dominant alleles for a gene. Although a homozygous dominant cat might have the same phenotype, or appearance, as a heterozygous one, the difference is that the homozygous dominant individual will 'breed true'.any genes come in two versions: the dominant allele and the recessive allele. Since diploid organisms (like you and me) have two copies of each of our genes, we could have one of each allele and be heterozygous or have two of the same and be homozygous.
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- The technique for creating speed congenics [14,15] is helpful to eliminate those alleles. (c) If noevidence for flanking-allele effects are found in the RF1, heterozygous mice are intercrossed to produce a ‘reverse F2’(RF2), in which the mutation effect can be confirmed and dissociated from flanking-gene effects.In the RF2, the generalgenetic background resembles that of the original F2.f the mutation is recessive,comparison of homozygous and heterozygous animalsshould reveal different phenotypes. With respect togenetic background, these animals are 129–C57BL/6hybrids, except in the flanking region where genes willbe homozygous for 129-derived alleles because ofgenetic linkage to the mutation.
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Medical Dictionary Heterozygous: Possessing two different forms of a particular gene, one inherited from each parent.
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- 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).
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Heterozygote advantageupdate Heterozygote advantage is a major underlying mechanism for heterosis, or hybrid vigor, which is the improved or increased function of any biological quality in a hybrid offspring.
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heterozygosity 1. heterozygosity-the state of being heterozygous; having two different alleles of the same gene. state-the way something is with respect to its main attributes; the current state of knowledge; his state of health; in a weak financial state.
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Biology Genetics (Theoretical Genetics) Recessive allele: an allele that only has an effect on the phenotype when present in the homozygous state. Codominant alleles: pairs of alleles that both affect the phenotype when present in a heterozygote. Locus: the particular position on homologous chromosomes of a gene.Homozygous: having two identical alleles of a gene. Heterozygous: having two different alleles of a gene. Carrier: an individual that has one copy of a recessive allele that causes a genetic disease in individuals that are homozygous for this allele.ocus: the particular position on homologous chromosomes of a gene. Homozygous: having two identical alleles of a gene. Heterozygous: having two different alleles of a gene. Carrier: an individual that has one copy of a recessive allele that causes a genetic disease in individuals that are homozygous for this allele.
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Heterozygous: A Genetics Definition A heterozygous plant would contain the following alleles for seed shape: (Rr). Organisms have two alleles for each trait. When the alleles of a pair are heterozygous, one is dominant and the other is recessive.Using the previous example, round seed shape (R) is dominant and wrinkled seed shape (r) is recessive.hen the alleles of a pair are heterozygous, one is dominant and the other is recessive. Using the previous example, round seed shape (R) is dominant and wrinkled seed shape (r) is recessive.
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- Homozygous dominant is a genotype that consists of two dominant alleles for a gene. Although a homozygous dominant cat might have the same phenotype, or appearance, as a heterozygous one, the difference is that the homozygous dominant individual will 'breed true'.