The human immune system will attack any foreign substance entering the body by generating antibodies which will attack and destroy them. Hence, these substances which trigger antibody creation are Origin of communication from primitive to antigens.
Now there are various useful sugars and proteins on the surface of our red blood cells, which our immune system might otherwise mistake to be foreign bodies and generate antibodies to kill them. However, our immune system is trained to ignore these self antigens the antigens which are generated inside our body.
The human blood group classification is based on these antigens on our Red Blood Cells RBCand there are around 32 Human Blood Group classifications based on the various antigen groups. ABO is a classification of human blood group based on the presence or absence of A or B antigens.
So if your blood has only A antigens, then your blood group is A, if it has only B antigens, then your blood group is B, if it has both of these, then your blood group is AB, and if it has neither, then your blood group is O.
So mismatching blood transfusion can be fatal. The Rh Blood Group Classification The second most important classification of human blood group is based on Rh antigens.
However, the main Rh classification is based on one single antigen of special importance, called the D antigen. So, if your blood has the Rh D antigen, then your blood group is Rh positive, else it is Rh negative.
The reason for the importance of this antigen is that a mismatch in the D antigen can prove fatal during blood transfusion, just like it does in AB antigen mismatch.
O-ve means a blood group which has neither A nor B antigens, nor Rh D antigen. Which is why in case of an emergency when there is no time to match for any other antigen reactions, O-ve is the safest blood transfusion that can be done without any prior tests because of the absence of A, B and Rh antigens in it.
So, if the father is Rh positive and mother is Rh negative, then extra care should be taken during pregnancy. But before that one more fact.
This is also the reason why blood groups like O-ve are very rare. Back to the alien blood group theory which states that If all mankind evolved from the same ancestor their blood would be compatible.
Where did the Rh negatives come from? If they are not the descendants of prehistoric man, could they be the descendants of the ancient astronauts? So what could be the contribution of alien blood here? The entire theory seems to have been built upon an incorrect understanding of blood groups, antigens and antibody response.
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Because Rh D is not the ONLY antigen either, in Rh group itself we have around 50 such antigens, and human blood group classification itself has around 32 types based on different groups of antigens. The theory then states All animals and other living creatures known to man can breed with any other of their species.
Relative size and color makes no difference. Well, it is not. We have seen newborns die because of this attack even in horses and mules! For that matter, it is not only restricted to Rh D antigen either. Its only that in this case it is not life threatening, while in the case of Rh D it can be life threatening to the baby.
It is only that while some of them cause no harm, some cause mild issues, and the ones like Rh D can be severe. So there is nothing alien here, and this is a common evolutionary compromise across the human species.
In evolution, the immune system has been trained only to accept its own antigens, anything foreign will be attacked by the immune system, and Rh D is not an exception, nor is the only case of its kind.
And so, it will attack it. The theory also asks Why does it so violently reject the Rh factor? As we saw earlier, the immune system treats ALL unknown antigens as foreign and attacks them. Rh D looks violent only because, attack on Rh D can cause serious complications in the baby.
Very few do not have it and hence are Rh negative. So what caused this mutation where some humans stopped having this antigen in their blood? What purpose did this serve?
It is interesting to note that Rh -ve or the absence of Rh D producing genes is common in the European population, even though it is rare in rest of the world.
This suggests that there might be an evolutionary advantage in this European population over NOT having Rh D antigen, than having it. So it might as well have served an advantage in this geography NOT to have the Rh D antigen, rather than have it.
And hence, such humans evolved to be Rh negative.Theories of the origin of language are first discussed from a linguistic point of view in secular writing.
Evolution had less effect on linguistics than on other social sciences, yet history shows that secondary effects were felt. No true link has ever been found with animal communication.
The work. Primitive definition, being the first or earliest of the kind or in existence, especially in an early age of the world: primitive forms of life.
See more. COMMUNICATION (general characteristics of communication, hear chinchilla sounds, speech recognition)General Characteristics of Communication Also see: General Characteristics of Behavior, Speech Recognition and Animal Sentience Site It's important to bear in mind that chinchillas are truly unique as individuals.
communication - Primitive Means - In earliest times people came together in groups to avoid loneliness, to help each other hunt and gather food, and to protect themselves from ever-present dangers.
In order to live and work cooperatively, they needed to find ways to communicate with each other. They were largely limited to things that could be heard, .
A leading expert on evolution and communication presents an empirically based theory of the evolutionary origins of human communication that challenges the dominant Chomskian view.
FCI announces its 2nd World Congress for Show Judges The congress will take place on June in the framework of the FCI Americas and the Caribbean Section shows ( June) at "Mundo Imperial Acapulco" exhibition centre.