ANTH 1001 Lecture : Anthro Notes Week 3 1
Document Summary
Modes of inheritance: pleiotropic effect (pleiotrophy, a single gene may have multiple effects, ex. Marfan gene: polygenic or continuous traits, governed by several alleles. Expressions may be much influenced by environment environment. Distribution of phenotypes is continuous with no discrete categories discrete categories. Evolution: the change over time, change in allele frequencies in a population from one generation to the next, features of evolution, change in allele frequency, measured over generations, only concerns populations, microevolution vs macroevolution. Point mutation: the fat hat ate the wee rat: translocation change the location of part of the chromosome, deletion and addition. Original: the fat cat ate the wee rat. Frame shift: the fat caa tet hew eer at. Examples of frame shift: cri-du-chat and prader willi/angelman syndrome. Mutation rates: the proportion of gametes carrying a newly arisen mutation at a given locus, natural selection and population size determine whether a mutation will increase in frequency in a population.
