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Chromosome X has a pseudo-autosomal region (PAR) which can be imputed for males and females together. Imputing the PAR on chromosome X is same as usual imputation, since both males and females are diploids at these sites. However, the non pseudo-autosomal region (non-PAR) needs to be imputed for males and females separately, as males are haploids while females are diploids. Of course, the PAR and non-PAR regions need to be imputed separately. This wiki page gives further details on imputing chromosome X.
 
Chromosome X has a pseudo-autosomal region (PAR) which can be imputed for males and females together. Imputing the PAR on chromosome X is same as usual imputation, since both males and females are diploids at these sites. However, the non pseudo-autosomal region (non-PAR) needs to be imputed for males and females separately, as males are haploids while females are diploids. Of course, the PAR and non-PAR regions need to be imputed separately. This wiki page gives further details on imputing chromosome X.
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* '''Convert files to VCF Format''' : Start by converting the unphased, quality controlled data set into VCF format. See our wiki page on .
    
* '''Split the data by Sex''' : Start by splitting the unphased, quality controlled data set by sex.
 
* '''Split the data by Sex''' : Start by splitting the unphased, quality controlled data set by sex.
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