Bitter inheritance. The Day family.

Narrated by John Hannah, the fourth in a series of programmes which follow the lives of families who are living with a genetic disease. Dave comes from a family who have Huntington Disease and may have passed the gene on to his two children. His mother, Jean, has developed symptoms of the condition already and James is in a dilemma about whether or not to get tested himself. Geneticist Nick Dennis discusses the pros and cons and James has the test done. During the three weeks that they await the results, James and his family discuss what the outcome of the test will mean for them all. Luckily, James' test is negative but his brother Ryan tests positive