Persilangan Golongan Darah tipe Rhesus

Hi Hi assalamualaikum warahmatullahi wabarakatuh meet again with me Widyaningsih this time we are still discussing the BAP of human heredity namely on the material of rhesus type blood group crossing Okay listen carefully Hi what we will discuss this time is the crossing of the Resort type blood group Hi based on the presence or absence of

rhesus antigens, it is divided into two, namely rhesus positive blood group and rhesus negative blood group rhesus positive contains rhesus antigens or agglutinogens and shows a clotting reaction to its antibodies increases Hi While for rhesus negative blood group does not contain rhesus antigens or agglutinogens so that the reaction to rh-negative antiserum or no

clotting occurs Hi Now let's see the phenotype and genotype of the rhesus blood group, the first is recessive phenotype Positive rh-positive has two genotypes, RH is large homozygous and rhr is small heterozygous While for rhesus negative there is only one genotype er HR HR is all small Okay now Let's take an example, a

woman with rhesus negative blood type. She married a man who had homozygous rhesus positive blood type. Hi, what is the possibility of her child having rhesus blood type? Well, let's see, ps1.rar, small H is married to large RH, the result is F1 is large er, hrh is rhesus positive at the birth of the

first child. In this case, the child is likely to be born safely. Hi, but in the next pregnancy, the mother has made antibodies to fight rh-positive so that the fetus will be destroyed by the mother's RH positive antibodies or if the fetus is born, it will be born without erythrocytes or red blood cells, the