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Neutral Substitution Rates. Finding Conserved Elements (1). Binomial method 25-bp window in the human genome Binomial distribution of k matches in N bases given the neutral probability of substitution. Finding Conserved Elements (2). A. C. Parsimony Method
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Finding Conserved Elements (1) • Binomial method • 25-bp window in the human genome • Binomial distribution of k matches in N bases given the neutral probability of substitution
Finding Conserved Elements (2) A C • Parsimony Method • Count minimum # of mutations explaining each column • Assign a probability to this parsimony score given neutral model • Multiply probabilities across 25-bp window of human genome A A G
Phylo HMMs HMM Phylogenetic Tree Model Phylo HMM
Statistical Power to Detect Constraint N L C: cutoff # mutations D: neutral mutation rate : constraint mutation rate relative to neutral
Statistical Power to Detect Constraint N L C: cutoff # mutations D: neutral mutation rate : constraint mutation rate relative to neutral