What is a single locus trait?
A quantitative trait locus (QTL) is a region of DNA which is associated with a particular phenotypic trait, which varies in degree and which can be attributed to polygenic effects, i.e., the product of two or more genes, and their environment. Consequently, many QTLs are associated with a single trait.Click to see full answer. Keeping…
A quantitative trait locus (QTL) is a region of DNA which is associated with a particular phenotypic trait, which varies in degree and which can be attributed to polygenic effects, i.e., the product of two or more genes, and their environment. Consequently, many QTLs are associated with a single trait.Click to see full answer. Keeping this in consideration, what is a single locus?The DNA fragments represent different locations of the genome; therefore, they are called “multi-loci” markers. Since what you investigate is a variation of alleles in one locus – you call RFLP marker as the single locus marker.Also Know, what is a qualitative trait? A qualitative trait is a feature, that is either present, or not present, depending on whether the gene responsible for that trait is present (or functional) or absent (or non-functional). An example for a qualitative trait is flower color, which could be red, brown, green, or yellow. Subsequently, one may also ask, which is an example of a quantitative trait? A quantitative trait is a measurable phenotype that depends on the cumulative actions of many genes and the environment. These traits can vary among individuals, over a range, to produce a continuous distribution of phenotypes. Examples include height, weight and blood pressure.How is QTL mapping done?It involves testing DNA markers throughout the genome for the likelihood that they are associated with a QTL. Principles of QTL mapping Genes and markers segregate via chromosome recombination during meiosis, thus allowing their analysis in the progeny.
