PEDIGREE FLOWCHART YES NO YES NO If a, b and c is YES 1. DO ALL AFFECTED INDIVIDUALS HAVE AN AFFECTED PARENT? YES NO Final Check: All individuals have 2 alleles (autosomal). All X chromosomes have alleles (X-linked). DOMINANT RECESSIVE Do ALL affected males have an affected mother? Do affected fathers have ALL affected daughters? Do affected fathers have NO affected sons? ARE MOSTLY MALES AFFECTED? YES NO If a, b and c is YES If any questions is NO X LINKED AUTOSOMAL X LINKED AUTOSOMAL

ALL AFFECTED MALES HAVE AN AFFECTED MOTHER. AFFECTED FATHERS HAVE ALL AFFECTED DAUGHTERS. NO SONS AFFECTED.

= male without phenotype = female without phenotype

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