Pedigree

Front

What is a pedigree?

Back

A pedigree is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors.

Front

What do half colored symbols represent in a pedigree?

Back

Half colored symbols represent that the individual is a carrier (heterozygous) for a trait.

Front

How is a carrier represented in a pedigree?

Back

A carrier is represented by a half shaded symbol.

Front

What does a horizontal line between a square and a circle indicate in a pedigree?

Back

A horizontal line between a square (male) and a circle (female) indicates that they are married ('together').

Front

How can we identify if an individual has a trait in a pedigree?

Back

An individual with the trait is represented by a shaded symbol.

Front

What does a shaded symbol in a pedigree signify?

Back

A shaded symbol signifies that the individual expresses the trait.

Front

What is the purpose of a pedigree chart?

Back

The purpose of a pedigree chart is to track the inheritance of traits through generations.

Front

What do the shapes in a pedigree represent?

Back

In a pedigree, circles represent females and squares represent males.

Front

What does a vertical line connecting a square and a circle represent?

Back

A vertical line connecting a square and a circle represents their offspring.

Front

What does it mean if a pedigree shows multiple generations with a shaded symbol?

Back

It indicates that the trait is likely inherited and may be dominant.