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, often used to track genetic traits.

Front

How many people in this whole pedigree have the trait/disease?

Back

4

Front

What does it mean if an individual is homozygous?

Back

An individual is homozygous if they have two identical alleles for a specific trait.

Tags

NGSS.HS-LS3-2

Front

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

Back

It represents that the individuals are married ('together').

Front

How many generations are typically shown in a pedigree?

Back

A pedigree can show multiple generations, often 3 or more.

Front

What is the definition of heterozygous?

Back

An individual is heterozygous if they have two different alleles for a specific trait.

Front

What is the purpose of a pedigree chart?

Back

The purpose of a pedigree chart is to analyze the inheritance patterns of traits and diseases across generations.

Front

What do squares and circles represent in a pedigree?

Back

Squares represent males, while circles represent females.

Front

What does it mean if a trait skips a generation in a pedigree?

Back

It may indicate that the trait is recessive, meaning it can be carried without being expressed.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the significance of a filled shape in a pedigree?

Back

A filled shape indicates that the individual expresses the trait or has the disease.