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Power with an assumed type 1 error rate of 1% in the case of equal half-sib families in a sample of 600 animals. The following conditions were tested i.e. true regression coefficient of 0.20 phenotypic standard deviation (σy) with minimum allele frequency (MAF) of 50%, which is equivalent to 0.33 σywith MAF 10% or equivalent to 2% of phenotypic variance for a: regression model; b: GRAMMAR model; c: FASTA model; d: QTDT model.
