why would you do pca in population genetics why snp correlation is used before pca which snp should be regressed before doing a pca why is pca used? should you remove highly correlated variables before doing pca why use pca when genetic markers become correlated what is pca and how should we use it why should a variable be removed before conducting a pca which factor should be removed before pca can pca be independent why is it used for pca why are snps pca used is pca the most reliable method of predicting snp relatedness why use a pca when predicting snp what is the principle approach to pca testing how to do a pca for a sample in population genetics if an snp are correlated should pca be done why do we do pca with closely related genetic markers? when should a pca be removed when to use a pca regression