Sunday, 2 October 2011

3.20 Pedigree Diagrams

Understand how to interpret family pedigrees.
If you have inherited a condition, then the square will be filled in if you were male and the circle would be filled in if you were female. Often these are diseases but not necessarily. The circles and squares represent phenotype (characteristics that can be observed)

Pedigree diagrams can also be used to determine whether an affected condition is a dominant allele or a recessive allele:

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