Answer:
1. Alzheimer's disease is when you begin to forget things and have memory loss.
2. It is inherited in an autosomal dominant pattern and if one of your parents has Alzheimer's you or your siblings could get it.
3. Single gene inheritance
Explanation:
Answer:
The heart valves
Explanation:
The heart valves prevent blood from flowing in the wrong direction in the heart. The valves are held in the proper place because of the chordae tendinae.