Bazı hastalıklara kusurlu bir gen tarafından sebep olunmaktadır.
- Some diseases are caused by a defective gene.
Bu kazaya neyin sebep olduğu tam bir sır.
- It is a complete mystery what caused the accident.
... have already caused the extinction of many species. The question is, is that going ...
... Or I must have caused my illness in some way. ...