6.4 - pedigrees
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Last updated 1:17 PM on 5/21/25
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9 Terms
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purpose
show phenotypes inherited in a family tree
track inheritence of a specific trait
make predictings about inheriting a trait
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squares
males
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circles
females
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filled in
affected
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blank
unaffected (normal)
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autosomal dominant traits
heterozygous (Ww) or homozygous-dominate (WW) genotypes
ex. widow’s peak (W) vs straight hairline (w)
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affected individuals
could be WW or Wwun
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unaffected
ww
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sex linked traits
ex. hemophilia (X-linked)
queen Victoria’s family passed hemophilia to children
son - Xh Y (hemophilia)
daughter Xh Yh (carrier, no disease)
Note 
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