BI111 Study Guide - Midterm Guide: Selection Coefficient, Chromosome, Panmixia
Document Summary
Dna consists of 3 main components: deoxyribose sugar, phosphate group, base. Originating helix: zipped and unzipped by several enzymes. More enzymes come in and use the old strand of dna to construct a new strand. Note: enzymes come in and correct mistakes in gene replication. Life wouldn"t be as it was if gene replication was inaccurate. On the other hand, life wouldn"t be the same if replication was 100% accurate o o. Mutations are essential for the evolution of life. Some species are more likely to mutate than others. Mutation rates vary based on the environment one is found in. Higher mutation rates in rna (single stranded) viruses in comparison to dna viruses. Rna is single stranded so if you have a mutation there is no template to check against. Dna has the duplicate template to catch errors easier. Higher in mitochondrial dna than in genomic dna. Higher in asexual species than sexual species.
