If you want 100% true statements, try searching this in biographys. I'm too lazy though so here's something from the internet mate.
Answer:
The most common conditions that are caused by an autosomal recessive gene mutation are cystic fibrosis, thalassaemia, haemochromatosis and Tay Sachs disease. Figure 7.7: Autosomal recessive inheritance when both parents are affected or predisposed to develop the condifion.
