ANT101H5 Lecture Notes - Lecture 3: Gregor Mendel, Allele Frequency, Dna Replication
Document Summary
Lecture 3: modern evolutionary theory & population genetics. Provided mechanisms of natural selection through breeding experiments with peas. Determined how one trait passed from one generation to the next. Each unit pair separates in gamete production, so that each gamete contains 1 member of each pair. Units (genes) that code for different traits assort independently of each other during gamete formation and recombine in offspring. Contains several base pairs to direct the production of a particular protein. Natural selection operates on the features in an individual, but populations evolve. Fitness: the relative reproductive success of individuals. Change in allele frequency from one generation to the next in a population. Homozygous: same variants of a trait (alleles) come together. Heterozygous: different variants of a traits (alleles) come together. Recessive: trait not expressed in heterozygous state. Dominant: trait expressed in the heterozygous state. Phenotype: observable physical characteristics of an organism. Sides made up of 2 strands of alternating sugars & phosphates,
