Pedigrees

Front

What is a pedigree?

Back

A pedigree is a diagram that shows the genetic relationships among family members and tracks inheritance of traits.

Front

What does a recessive disorder mean in a pedigree?

Back

A recessive disorder means that an individual must have two copies of the recessive allele (hh) to express the disorder.

Front

How is a dominant allele represented in genetics?

Back

A dominant allele is represented by a capital letter.

Front

How many alleles does a child inherit from each parent?

Back

A child inherits one allele from each parent for a trait, making a total of two alleles.

Front

What is the purpose of using pedigrees in genetics?

Back

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

Front

What does it mean if an individual is homozygous recessive?

Back

An individual is homozygous recessive if they have two copies of the recessive allele (hh).

Front

What does it mean if an individual is heterozygous?

Back

An individual is heterozygous if they have one dominant allele and one recessive allele (Hh).

Front

How can you determine the genotype of an individual in a pedigree?

Back

You can determine the genotype by analyzing the phenotypes of the individual and their relatives.

Front

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

Back

The third generation in a pedigree shows the offspring of the second generation and helps track the inheritance of traits.

Front

What does a capital letter signify in a pedigree?

Back

A capital letter signifies a dominant allele.