How do people inherit illnesses from their genetics?

Question: How do people inherit illnesses from their genetics?
- Keywords:
  genetics,
  illness,
  inherit
Asked by 476dagk22 to Katherine on 17 Nov 2017.
- Katherine Benson answered on 17 Nov 2017:
  
  You inherited half of your DNA from your Mum and the other half from your Dad. This DNA contains sections called ‘genes’ which are instructions for making proteins. Changes to these genes called ‘mutations’ are passed down from generation to generation in the DNA and these mutations are the cause of many inheritable diseases!

Question: How do people inherit illnesses from their genetics?