what is the most recognized gene or disorder

Question: what is the most recognized gene or disorder
- Keywords:
  disorder,
  gene
Asked by Ingrid to Katherine on 9 Nov 2017.
- Katherine Benson answered on 9 Nov 2017:
  
  It’s hard to say, the most commonly recognised genetic disorder is possibly Down’s syndrome, which is usually caused by an extra copy of chromosome 21

Question: what is the most recognized gene or disorder