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2. Drawing a family pedigree Build up the tree from the "bottom"starting with affected child and siblingsRecord names, dates of birth
6. Drawing a family pedigree Ask about consanguinity"Are you and your partner related?Are there any surnames in common?"
Date and sign the pedigree
For a known diagnosis (eg autosomal recessive)it may not be necessary to collect as much detail
Record at least basic information on bothsides of the family even if a disorder issegregating on only one side