Lecture 11 MutDrift--Post

Lecture 11 MutDrift--Post - Mutation and genetic drift I....

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Mutation and genetic drift I. Mutation as an evolutionary force An evolutionary force = a process that changes allele frequencies Mutations = chance events that create new alleles A. What is the molecular basis of mutation? • Genes are portions of deoxyribonucleic acid • Genes encode the information required to make the proteins and RNA molecules that • Information in DNA is stored in a molecular code made up of nitrogen-containing (nitrogenous) • Groups of three bases (called codons) specify an • The rules for translating the bases in DNA to the amino acids in a protein are called the • A mutation is a change in a B. How often do mutations occur? Data from Caenorhabditis elegans (a roundworm) They are self-fertile • Start with one individual, let it breed and raise the offspring • Choose one individual at random to be the progenitor of the next generation • … let it breed, raise the offspring, choose one F 2 offspring at random etc. for Analyze the same genes at generation
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Lecture 11 MutDrift--Post - Mutation and genetic drift I....

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