BIOA11H3 Lecture Notes - Lecture 7: Probability Distribution, Heritability, Abo Blood Group System
Document Summary
Off or on character- individuals have one phenotype or another. E. g. height, weight, intelligence large range of phenotype! Adding all values and dividing the number of individuals in the population. Measure of how much variability there is in the population. Polygenic traits traits influenced by genes! interaction of multiple genes multiple alleles results in many phenotypes. Continuous variation may result from environmental effects. Calculating heritability : the role of genes in determining a quantitative trait. Proportion of variation within a population due to genetic differences among individuals. On average parents and offspring had same level of immunity therefore, immunity is heritable. Correlations between human groups are used to estimate the genetic components of trait. Difficulties we will never be able to separate only genetics from environment. Parents and children usually share the same environment +lifestyle. Mono/dizygotic twins separated at birth and raised in different homes. Differences between groups may be environmental despite high heritability consider iq in human.
