<prompt> Which statement is false regarding familial adenomatous polyposis :Males are usually carriersAutosomal dominant inheritanceIf not treated progress to malignancy in 100 of casesMales and females are affected equally.  <response>: Ans. is a i.e. males are usually carriers Familiar polyposis coli is an autosomal dominant condition affecting males and females equally.It is characterized by presence of thousands of adenomatous polyps throughout the large bowel.Carcinomatous change supervenes in these polyps in 100 of cases by the age of 30-35yrs.Therefore prophylactic colectomy is done. 