Pedigrees Tracking Traits Pedigrees Mr Drivas and Mr

Pedigrees Tracking Traits

Pedigrees Mr. Drivas and Mr. Kitchen

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

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

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

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

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

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

Pedigrees Dominant Mr. Drivas and Mr. Kitchen

Pedigrees Recessive Mr. Drivas and Mr. Kitchen