Pedigrees

Front

What is a genotype?

Back

A genotype is the genetic constitution of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

A phenotype is the observable physical appearance or characteristics of an organism, resulting from the interaction of its genotype with the environment.

Front

What do pedigrees help us track?

Back

Pedigrees help us track the inheritance of traits in families across generations.

Front

How are dominant alleles represented?

Back

Dominant alleles are represented by a capital letter.

Front

How are recessive alleles represented?

Back

Recessive alleles are represented by a lowercase letter.

Front

What is the relationship between individuals in a pedigree?

Back

Individuals in a pedigree can be related in various ways, such as siblings, parents, grandparents, or uncle/niece.

Front

What does it mean if a trait is autosomal dominant?

Back

If a trait is autosomal dominant, it means that only one copy of the dominant allele is needed for the trait to be expressed.

Front

What does it mean if a trait is autosomal recessive?

Back

If a trait is autosomal recessive, it means that two copies of the recessive allele are needed for the trait to be expressed.

Front

What is a carrier in genetics?

Back

A carrier is an individual who has one copy of a recessive allele for a trait but does not express the trait phenotypically.

Front

What is the purpose of a Punnett square?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.