1. Pedigrees
Tracking Traits

2. Mr. Drivas and Mr. Kitchen
Pedigrees
Mr. Drivas and Mr. Kitchen

3. Pedigrees Punnet’s Squares -purpose?
Used to determine the probability of obtaining offspring of a given genotype/phenotype
Constructed using the genotypes of
Mr. Drivas and Mr. Kitchen

4. Mr. Drivas and Mr. Kitchen
Pedigrees
Pedigree – purpose?
Used to track a given trait through a family’s history
Depends on information obtained about related individuals
Mr. Drivas and Mr. Kitchen

5. Mr. Drivas and Mr. Kitchen
Pedigrees
Differences
Punnet’s Square
Probabilities associated with offspring of certain genotype/phenotype
Hypothetical - probability
Future – unborn
Pedigree
Tracking of the Inheritance of a trait throughout the history of a family
Real history
Past – alive or once alive
Mr. Drivas and Mr. Kitchen

6. Mr. Drivas and Mr. Kitchen
Pedigrees
Male
Female
Individual with trait
Carrier of trait
(recessive)
Mr. Drivas and Mr. Kitchen

7. Mr. Drivas and Mr. Kitchen
Pedigrees
Dead Individual
Fraternal Twins
Identical Twins
Mr. Drivas and Mr. Kitchen

8. Mr. Drivas and Mr. Kitchen
Pedigrees
Horizontal lines
Mating
Vertical lines
Separate generations
Roman numerals
Generation number
Numbers
Individuals within generations I II 1 2
Mr. Drivas and Mr. Kitchen

9. Mr. Drivas and Mr. Kitchen
Pedigrees
Dominant
Mr. Drivas and Mr. Kitchen

10. Mr. Drivas and Mr. Kitchen
Pedigrees
Recessive
Mr. Drivas and Mr. Kitchen