BIOL 303 Chapter 7: Multifactorial Traits
8 Mar 2017
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Chapter 7: multifactorial traits twins express the trait among pairs of twins in whom at least one has the trait. Geneticists calculate the concordance of a trait as the percentage of pairs in which both. Dna sequences that contribute to polygenic traits are called quantitative trait loci. Snp: a single nucleotide polymorphism is a site in the genome that is a different. Cnv: a copy number variant is a tandemly repeated dna sequence, such as. Gene expression: the pattern of genes that are overexpressed and/or underexpressed in people with a particular trait or disease. According to the thrifting gene hypothesis , future obesity is not sealed in the genes at conception but instead is much more likely to occur if the environment provides too many calories and too much fat. Multifactorial traits are a type of polygenic traits that are influenced by the environment. Melanin pigments color the skin in different individuals.
