BIO120H1 Lecture Notes - Lecture 4: Neo-Darwinism, Point Mutation, Meiosis
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BIO120H1 Full Course Notes
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Genotype - genetic constitution of a n organism - used in relation to a particular gene of gene combinations e. g aa, aabb. Phenotype - organism as observed - used when discussing a trait or feature of an organism that varies. Genome - the entire organisms dna including genes and non coding regions. What is a gene? functional unit of inheritance unit of hereditary information located on chromosomes consisting of. Dna sequence composed of codons essential for a specific biological function. Evolution requires genetic variation - where does it come from? mutation (most significant) recombination - mixing of genetic variable from generations (sex) gene flow (migration) hybridization. Independent assortment and recombination independent assortment and recombination during meiosis generates independent assortment and recombination during meiosis generates enormous diversity most genetic variability in a pop results from sex; in a ny given generation input from mutation very small. Point mutation (most common) - change in base in dna sequence.
