Pedigree Charts

Front

What is a pedigree chart?

Back

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

Front

What does a circle represent in a pedigree chart?

Back

A female individual.

Front

What does a square represent in a pedigree chart?

Back

A male individual.

Front

How are affected individuals represented in a pedigree chart?

Back

By a completely shaded shape.

Front

How are unaffected individuals represented in a pedigree chart?

Back

By an unshaded shape.

Front

What does a half-shaded shape represent in a pedigree chart?

Back

A carrier of the trait.

Front

What is the purpose of a pedigree chart?

Back

To track the inheritance of traits across generations.

Front

What information can be derived from a pedigree chart?

Back

It can show how traits are passed from parents to offspring.

Front

What is a carrier in genetics?

Back

An individual who has one copy of a recessive allele that does not manifest in their phenotype.

Front

What does it mean if a pedigree chart shows multiple affected individuals in a generation?

Back

It may indicate that the trait is dominant or that there is a high carrier frequency.