<prompt> An effected male infant born to normal parents could be an example of all of the following, exceptAn Autosomal Dominant disorderAn Autosomal Recessive disorderA Polygenic disorderA Veically Transmitted disorder  <response>: An autosomal dominant disorder if present in the parents will always express itself phenotypically. So it is not possible for normal parents to have an child affected with an autosomal dominant disorder. Reference: GHAI Essential pediatrics, 8th edition 