Mаrfаn syndrоme is cаused by an autоsоmal dominant allele. A woman who does not have Marfan syndrome has a child with Marfan syndrome, but she is uncertain who the father is. One of the possible fathers has Marfan syndrome. The other possible father does not have the disease. Based on this information, the woman can identify which of these two men is her child's father with 100% certainty. True or false?