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 does a filled circle represent in a pedigree chart?

Back

A filled circle represents an affected female.

Front

What does a filled square represent in a pedigree chart?

Back

A filled square represents an affected male.

Front

What does an empty circle represent in a pedigree chart?

Back

An empty circle represents a not affected female.

Front

What does an empty square represent in a pedigree chart?

Back

An empty square represents a not affected male.

Front

How do you identify carriers in a pedigree?

Back

Carriers are typically represented by half-filled symbols, indicating they do not express the trait but can pass it on.

Front

What is the significance of generations in a pedigree?

Back

Generations in a pedigree help track the inheritance of traits over time, showing how traits are passed from parents to offspring.

Front

How can you determine the number of individuals in a specific generation from a pedigree?

Back

Count the number of symbols (squares and circles) in that generation.

Front

What is the purpose of using pedigree charts in genetics?

Back

Pedigree charts are used to analyze the inheritance patterns of traits and to identify carriers of genetic disorders.

Front

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

Back

If a trait skips a generation, it may indicate that the trait is recessive and that carriers are present.