An affected male infant born to normal parents could be an example of all of the following, except:
A i.e. Autosomal dominant disorder Autosomal dominant disease cannot occur in offspring of an unaffected individuals. Because the allele is dominant it will always express phenotypically (clinically) and hence both parents can't be normal in autosomal dominant disorders even if they have a single abnormal gene.
An Autosomal dominant disorder
An Autosomal recessive disorder
A polygenic disorder
A veically transmitted disorder