BIO120H1 Lecture Notes - Lecture 4: Mutation Rate, Wild Type, Phenotype
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BIO120H1 Full Course Notes
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Document Summary
Genotype genetic constitution, used in relation to a specific gene or gene combo. Phenotype how the organism looks, what we see on the outside, genotype + environment. Genome very recent(20 years ish) entire organisms dna including both genes and non- coding genes, very important in lots of fields of science. Gene=functional unit of inheritance, located on the chromosomes consisting of dna composed of codons, Mutation is the ultimate source of genetic variation. Recombination is important as is gene flow(of a population ->later)and hybridization are all important for genetic variation. Sex(meisois so indented assortment and recombination) causes most of the variability between two consecutive generations. Very well understood concept ex. fruit fly eyes(red eves aka wild type or white eyes aka recessive mutant) Single gene affect fly has a homeotic mutation, leg where his antennas should be. Mutation: stable change in dna sequence resulting in a change in the genotype,
