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Pedigrees
Males are square
Females are circles
The symbols for affected individuals are filled
The symbol for carries of the trait are filled in half way
There is a line between individuals that are married or have produced children the line is doubled when the individuals are related (Consanguinous)
Children are connected by a vertical line from the parents and a horizontal line from each other.
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Tay Sachs ---Recessive Autosomal |
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Sickle Cell Codominant |
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http://projects.cbe.ab.ca/Diefenbaker/Biology/Bio%20Website20Final/ |
Look for other examples by using Google Images and asking for human pedigrees
