Genetic diagrams and terminology (CCEA)Pedigree diagrams

Genetic diagrams show how characteristics are inherited. Alleles can be recessive, dominant or codominant genes.

Part ofCombined ScienceGenetics

Pedigree diagrams

Pedigree diagrams are used to show how a genetic condition is inherited in a family.

They are often used to advise individuals within a particular family if they are carriers of a condition.

Pedigree diagram