Commonest among diseases with Mendelian inheritance is –: (A) Autosomal dominant, (B) Autosomal recessive, (C) X–linked recessive, (D) X–dominant
Answer is A. It is estimated that the combined incidence of mendelian inheritance (autosomal dominant, autosomal recessive, x-linked) in man is about 1% of all live born individuals.
As many as 793 autosornal dominant phenotypes, 629 autosomal recessive traits and 123 sex linked diseases have been catalogued to date.