1 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 3 4 5 6 7 Solution In autosomal recessive inheritance, both copies of an abnormal gene must be present in order to develop the disease or trait. The parents of an individual with an autosomal recessive condition each carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition and are called carriers. However, they can transmit the abnormal gene to their offspring. Autosomal recessive disorders are typically not seen in every generation of an affected family and skipping of generation occurs..