Patterns & Probability of InheritanceMrs. Anna WardJames Martin MS

Do Now!!!!1. The cell _________________

protects the plant cell.2. Cells are the smallest unit of

_________________.3. __________________ organisms

are made up of only one cell.

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How to interpret the information from a PedigreeFemales are indicated with a circle, and males are indicated with a square. 

= FEMALE

= MALE

How to interpret the information from a PedigreeA straight, horizontal line connecting a female and a male indicates that the two are married, and/or produced children.

How to interpret the information from a PedigreeA slash across a shape indicates the person is deceased. (DEAD)

How to interpret the information from a PedigreeA straight, vertical line connected to the vertical line above indicates the children produced by that union.

How to interpret the information from a PedigreeIf more than one child is birthed, then the children are placed in BIRTH ORDER along a vertical Line.

How to interpret the information from a Pedigree

Shapes may be shaded or clear. Shaded = Has trait/diseaseUnshaded = Does notOccasionally you may also see apartially shaded shape, or a shape with a dot. This indicates the person is a “Carrier” of the disease (is heterozygous for the trait, but the dominant allele overrides the recessive disease trait.