Lesson 3 and Pedigree Review

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

How are males represented in a pedigree chart?

Back

Males are typically represented by squares in a pedigree chart.

Front

How are females represented in a pedigree chart?

Back

Females are typically represented by circles in a pedigree chart.

Front

What does a horizontal line between two shapes represent in a pedigree?

Back

A horizontal line between two shapes represents a mating or union between individuals.

Front

What do vertical lines represent in a pedigree?

Back

Vertical lines represent the offspring of the individuals connected by a horizontal line.

Front

What is the purpose of using Roman numerals in a pedigree?

Back

Roman numerals are used to indicate generations in a pedigree chart.

Front

What is the study of genetics?

Back

Genetics is the study of genes, genetic variation, and heredity in living organisms.

Front

What is a trait?

Back

A trait is a characteristic or feature of an organism, which can be inherited or acquired.

Front

How can you determine the number of generations in a pedigree?

Back

Count the number of rows of Roman numerals in the pedigree chart.

Front

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

Back

A filled shape indicates that the individual has the trait being studied.