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Locus heterogeneity occurs when mutations … Locus heterogeneity occurs when mutations at multiple genomic loci are capable of producing the same phenotype (ie. a single trait, pattern of traits, or disorder), and each individual mutation is sufficient to cause the specific phenotype independently. Locus heterogeneity should not be confused with allelic heterogeneity, in which a single phenotype can be produced by multiple mutations, all of which are at the same locus on a chromosome. Likewise, it should not be confused with phenotypic heterogeneity, in which different phenotypes arise among organisms with identical genotypes and environmental conditions. Locus heterogeneity and allelic heterogeneity are the two components of genetic heterogeneity. Locus heterogeneity may have major implications for a number of human diseases. For instance, it has been associated with retinitis pigmentosa, hypertrophic cardiomyopathy, osteogenesis imperfecta, and familial hypercholesterolemia. Heterogenous loci involved in formation of the same phenotype often contribute to similar biological pathways. The role and degree of locus heterogeneity is an important consideration in understanding disease phenotypes and in the development of therapeutic treatment for these diseases. The detection of causal genes for diseases impacted by locus heterogeneity is difficult with genetic analysis methods such as linkage analysis and genome sequencing. These methods rely on comparison of affected family members, but when different family members have different disease-causing genes, such genes may not be accurately identified. Existing techniques have been modified and new techniques have been developed to overcome these challenges.en developed to overcome these challenges.
, Lokusheterogenitet är när mutationer i oli … Lokusheterogenitet är när mutationer i olika gener, oberoende av varandra orsakar samma fenotyp (egenskap/sjukdom). Ett exempel på ett sådant fall är att ögonsjukdomen retinitis pigmentosa kan orsakas av autosomala dominanta (alla med genen får sjukdomen), autosomala recessiva (de med två anlag får sjukdomen, de med ett anlag bär på sjukdomen utan att bli sjuk) eller x-kopplade mutationer.att bli sjuk) eller x-kopplade mutationer.
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Lokusheterogenitet är när mutationer i oli … Lokusheterogenitet är när mutationer i olika gener, oberoende av varandra orsakar samma fenotyp (egenskap/sjukdom). Ett exempel på ett sådant fall är att ögonsjukdomen retinitis pigmentosa kan orsakas av autosomala dominanta (alla med genen får sjukdomen), autosomala recessiva (de med två anlag får sjukdomen, de med ett anlag bär på sjukdomen utan att bli sjuk) eller x-kopplade mutationer.att bli sjuk) eller x-kopplade mutationer.
, Locus heterogeneity occurs when mutations … Locus heterogeneity occurs when mutations at multiple genomic loci are capable of producing the same phenotype (ie. a single trait, pattern of traits, or disorder), and each individual mutation is sufficient to cause the specific phenotype independently. Locus heterogeneity should not be confused with allelic heterogeneity, in which a single phenotype can be produced by multiple mutations, all of which are at the same locus on a chromosome. Likewise, it should not be confused with phenotypic heterogeneity, in which different phenotypes arise among organisms with identical genotypes and environmental conditions. Locus heterogeneity and allelic heterogeneity are the two components of genetic heterogeneity.e two components of genetic heterogeneity.
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Locus heterogeneity
, Lokusheterogenitet
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