1. X-Linked Conditions: Case Scenarios
This PowerPoint file contains a number of slides that may be useful for teaching of genetics concepts.
You may use these slides and their contents for non-commercial educational purposes.
This presentation includes:
A Duchenne muscular dystrophy pedigree showing X-linked inheritance
A pedigree used to assess risk of DMD in offspring
A DMD case scenario.

2. DMD Pedigree
The X chromosome carrying the disease-causing mutation can be tracked through the family

3. “Will I have a boy with Duchenne Muscular Dystrophy?”

4. Jason’s family tree
Jason, aged 3 yrs referred to a paediatrician by his GP
Later walking than older siblings
Difficulty running and riding tricycle
Always climbs up stairs on all fours
Jason
Rachel
Tony
Susie
3.6.95
Fay
7.1.98