1. Pedigrees

2. What do you think of when you hear the word Pedigree?
Question:
What do you think of when you hear the word Pedigree?

3. Pedigrees
A tool used to trace inherited traits in humans
A “family tree” for a specific trait
A chart showing the presence or absence of a trait

4. Symbols on a pedigree chart:
Circle = female
Square = male

5. Symbols on a pedigree chart:
A ½ shaded circle or square = a person who carries the trait
A completely filled circle or square = a person who has the trait
A circle or square that is NOT shaded = a person who is not
a carrier or a person with that trait

8. Symbols on a pedigree chart:
The vertical lines and brackets = connect the parents to their children
A horizontal line = a marriage between a male and female

9. # of generations =
% of individuals with warts=
# of females = ; # of males =
Is the trait dominant or recessive?
#of carriers =
Individuals effected by:
Warts