Pedigrees

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 is the purpose of using pedigrees?

Back

Pedigrees are used to track traits in families and to make determinations about the offspring.

Front

In a pedigree, how is a male represented?

Back

A male is represented by a square.

Front

In a pedigree, how is a female represented?

Back

A female is represented by a circle.

Front

What does it mean if an individual is a carrier of a trait?

Back

A carrier is an individual who has one copy of a recessive allele that does not manifest in their phenotype but can be passed to offspring.

Front

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

Back

You can determine the number of carriers by analyzing the offspring and their parents' phenotypes.

Front

What shape represents an affected individual in a pedigree?

Back

An affected individual is typically represented by a shaded shape (square for males, circle for females).

Front

What information can you gather from a pedigree chart?

Back

You can gather information about inheritance patterns, family relationships, and the presence of genetic traits.

Front

What is the significance of generations in a pedigree?

Back

Generations in a pedigree help track the inheritance of traits over time and across family lines.

Front

How do you read a pedigree chart?

Back

To read a pedigree chart, follow the lines connecting individuals to understand relationships and track traits.