Helping dog breeders combat inherited diseases through understanding genetics.

Exercise: The Inheritance of PRA

Use this interactive to find out about the inheritance of Progressive Retinal Atrophy in Labradors. Coat colour inheritance is also represented so you can experiment breeding with two different characterisics.

The genetic profiles of the puppies are randomly generated from the parents, just like in real life. Only one puppy is created at a time — create 8 to 12 for an average-sized litter.

You should have read and understood the the Introduction to Genetically Inherited Diseases and Example: Progressive retinal atrophy sections of this web site before using this interactive.