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

What does a filled square represent in a pedigree chart?

Back

A filled square represents an affected male.

Front

What does a filled circle represent in a pedigree chart?

Back

A filled circle represents an affected female.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable traits or characteristics.

Tags

NGSS.HS-LS1-1

Front

What does the notation 'AA' indicate in genetics?

Back

'AA' indicates a homozygous dominant genotype.

Front

What does the notation 'aa' indicate in genetics?

Back

'aa' indicates a homozygous recessive genotype.

Front

What does the notation 'Aa' indicate in genetics?

Back

'Aa' indicates a heterozygous genotype.

Front

What is a recessive trait?

Back

A recessive trait is a trait that is only expressed when an individual has two copies of the recessive allele.

Front

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

Back

Count the number of horizontal rows in the pedigree chart.

Front

What is the significance of the parental generation in a pedigree?

Back

The parental generation is the first generation in a pedigree, providing the genetic information for subsequent generations.

Tags

NGSS.HS-LS3-1