The difference between dominant and recessive inheritance lies in the differences in the causes of pathogenesis, the clinical manifestations of the parents, and the probability of inheritance. 1. Different causes of disease. If a person carries a disease-causing gene, it can lead to the development of the disease; if only a pureblooded person with a recessive gene can develop the disease, it is recessive inheritance; if a heterozygous person with a disease-causing gene does not develop the disease, but it can be inherited by the offspring. 2. The clinical manifestations of the parents are different. In dominant inheritance, one of the two parents must have the disease; in recessive inheritance, both parents can be normal. 3. The probability of inheritance is different. The siblings and offspring of patients with dominant inheritance are half as likely to have the disease, and there are usually several consecutive generations of patients with the disease in the genealogy; while patients with recessive inheritance usually do not see the phenomenon of consecutive inheritance.