A person has a gene that determines the nail and patellar defect syndrome (D is a dominant trait), as well as the gene that determines the blood group according to the ABO system, are located on the same chromosome at a distance of 10 morganides. List all possible types of gametes in a person with IV blood group and heterozygous for the gene for the defect of nails and kneecap. Describe your response widely, please.