Pedigrees
Pedigree Chart: shows the absence or presence of a trait
according to the relationships between family members.
Pedigrees
Determine if the trait is dominant or recessive trait?
Determine the genotype of every member in the family.
Pedigrees
What can you learn by making a pedigree:
• How genetic disorders can be inherited from one
generation to the next. (sex-linked, autosomal
dominant, autosomal recessive)
• If you have a genetic disorder in your family, then
pedigree can determine how likely you are to passed
the disorder to future generation.
Example of Pedigree Charts
• Dominant, Recessive, or X-linked recessive?
Answer
• Autosomal Dominant