ANTA01H3 Chapter Notes - Chapter 3: Allele Frequency, Gamete, Genetic Drift
Document Summary
Principal of individual assortment: genes that code for different traits assort independently during gamete formation. Mendelean traits: controlled by allels at one genetic locus, most are not seen as a visible phenotype expression, antigens large molecules found on the surface of the cells. Myths on dominance and recessivness: allels do have an effect on the phenotype, dominant alleles aren"t always common. Polygenic inheritance: more than 2 different phenotype outcomes like eyes skin, continuous variation influenced by many loci influenced by more than 1 gene. Additive effect: each allele that codes for melanin production makes a contribution to increased leavels of melanin continuous trait, measure something, the distrivution of measurments would continue uninteruppred from shortest extreme to tallest. Genotype interact with the environment: that infuences phenotype. Mendeleain traits are less influenced theyre determined. Natural selection on variation inherited difference differently affect the ability to reproduce: current definition of eviolution. Evolution is gradual change through accumulation of small genetic changes.
