it was first discovered in our common monkey Rhesus.RH-negative and positive
2006-11-23 18:54:56 · 4 answers · asked by quriks 1 in Science & Mathematics ➔ Biology
It's actually a misconception that there are 2 Rh factors, one positive and one negative. It's not true. You either have it or you don't, but you can't have a negative one.
2006-11-23 19:02:21 · answer #1 · answered by Tish 5 · 0⤊ 0⤋
rh factor was discovered by landsteiner in rhesus monkey. So he named it after it i.e. rh factor. These are antigens is present on the surface of rbc. if person has it then he is rh +ve, if not then rh-ve. It acts as a determination factor during blood transfusion because it can also cause antigen antibody reactions. But if there is emergency then rh+ve blood can be given to rh-ve as the agglutination reactions(antigen-antibody reactions) are of delayed type. It also causes severe complications during pregnancy. if an rh-ve women has rh+ve foetus then antibodies could develop against the rbc of foetus. There are chances that first birth may survive but there are high risks during 2nd birth as antibodies are readymade present in mothers body.
2006-11-24 09:36:12 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Rh is consist of Rh + and Rh-
Rh+ is dominant to Rh-
(Rh- is ressesive)
a Rh- mother who is pregnanting a Rh+ fetus, might have her baby died because her mother body will form an antibody to kill the Rh+.
it`s called erytroblastoct foetalis
2006-11-24 03:28:40 · answer #3 · answered by Papilio paris 5 · 0⤊ 1⤋
RH is a protein marker on the red blood cells. If a person has the markers on his/her blood cells, he/she is RH+; if doesn't, he/she is RH-.
2006-11-24 03:03:57 · answer #4 · answered by smarties 6 · 0⤊ 0⤋