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Questions tagged [blood-group]

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9
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1answer
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What will happen if a foetus is Rh- and the mother is Rh+?

If a mother has Rh-negative blood and her foetus has Rh-positive blood it will result in rhesus incompatibility and lead to erythroblastosis fetalis. What will happen if the reverse occurs, when a ...
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0answers
16 views

Why can AB people receive blood from A, B or O? [duplicate]

AB people don't have agglutinins anti A or anti B so it might seem they can receive any type of blood. But if the donator is A for example, it's own blood will have agglutinins anti B that will ...
9
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1answer
41k views

Why can blood group O be given to all blood groups?

The blood of persons of blood group O contains antibodies against antigens A and B. The red blood cells of persons of blood group A have A antigen on their surface. If someone with blood group A ...
3
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0answers
22 views

Question on compatibility of blood groups [duplicate]

How come a person with blood group O can donate to a person with blood group AB? Since there are A and B antibodies in the O blood group blood surely this would cause agglutination in the blood of the ...
0
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1answer
83 views

How it is possible that blood group shows that a person is not the son or daughter of their parents?

I see a family in which it has only one daughter. The blood group of the mother is AB positive and the father is B positive, but the blood group of the daughter is O negative. When she was young, ...
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2answers
1k views

Why does Anti-A antibodies make type-A blood type clump?

A-type blood has B-antibodies; it also clumps anti-A antibodies are inserted. Why is that? The blood has no antibodies against the A-antibodies to make clump in this way.
2
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2answers
2k views

Pregnancy from two parents with incompatible blood types, can it lead to complications?

Let's take Alice and Bob, both healthy adult human specimens. Alice is (A-). Bob is (B+). If they decide to have a child, would Alice's pregnancy involve any additional risk or complications ...
1
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1answer
539 views

Determine the chances of blood group type and rhesus factor of unknown parent?

First of all, I'm not a biologist so my jargon might not exactly be common on this site. I'm a programmer and as a hobby project I try to make an algorithm that does two things: Determine the ...
2
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1answer
82 views

Blood Group Notation

In a textbook, I encountered a notation used when writing blood groups down, which was "I" with the blood group type as a superscript. I was curious as to why the letter "I" is used in this notation ...
4
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0answers
114 views

When did human and animal blood became distinguishable from each other as forensic evidence?

Since a few decades ago, DNA testing became an important tool in criminal forensics, and a lot of information can be gathered from a single drop of blood or from a few cells. Even before that, blood ...
2
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1answer
921 views

How is the probability of Rh type inheritance calculated?

I found somewhere on the Internet that, if parents are both Rh-positive, their children have 93.75% chance of being RH-positive and 6.25% chance of being RH-negative. My question is: How is this ...
4
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1answer
501 views

Why is my blood group O -ve?

My parents have B +ve blood group in fact my brother also have B +ve blood group, then why my blood group is O -ve ?
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0answers
236 views

Agglutination test of cats

Is the blood test result for the P1 cat is logical? Because, it shows that even the card containing no antibody, has undergone aggluntination!
0
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1answer
349 views

Blood antigens and immune response

In my textbook, the definition of an antigen is written as follows: Antigen: A substance that the body recognises as foreign and that can evoke an immune response The following image also confused ...
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1answer
104 views

Why does the blood not clump and result in death?

In this question's accepted answer, it is said that the blood type will slowly change to that of the donor's. When the blood in the person is about 50% his own and 50% that of the donor's. i.e, 50% A ...
-3
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1answer
303 views

Making a offspring with O+ blood [closed]

If offspring is O+ what blood type would parents have to have to make this possible?
0
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1answer
175 views

Is H antigen considered as an agglutinogen?

A and B antigens which have the potential to cause agglutination in certain cases are called agglutinogens. But, as far as I know, H antigen cannot give rise to agglutination. So can it be said that H ...
6
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1answer
892 views

What happens if there is a blood incompatibility during pregnancy?

There are possible combinations of blood types with the rH factors: Rh factors are genetically determined. A baby may have the blood type and Rh factor of either parent, or a combination of both ...
0
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1answer
807 views

Identifying an Unknown Blood Type [closed]

The following case study has a student working with blood samples to identify their blood types (A, B, AB, and O). Consider the situation and answer the questions. A student is given eight ...
2
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1answer
465 views

Cis-AB phenotype verification

I know that my blood type is AB. I wanted to know if I am cis-AB since cis-AB seems to have a different approach in blood transfusion. Is there a lab test that can verify is a person is under cis-AB ...
1
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1answer
1k views

Where is sialic group in gangliosides that form ABO blood groups?

A ganglioside is a molecule composed of a glycosphingolipid (ceramide and oligosaccharide) with one or more sialic acids (e.g. n-acetylneuraminic acid, NANA) linked on the sugar chain. (source: https:/...
2
votes
1answer
2k views

agglutination test using blood of the donor and the recipient

we were told that agglutination occurs when the matching antibody react with its antigen on the RBC surface (as antibody B with antigen B).... Also when blood transfusion, Donors plasma with ...
6
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1answer
875 views

Parents are Rh +ve and child Rh -ve

Suppose the two parents of a child have blood groups A+ve and O+ve, and the child has O-ve type. For blood group, there are two alleles. Since the child has O, the father must have one 'A' allele and ...
5
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1answer
218 views

Any evolutionary explanation for human blood groups?

What is the explanation of people having blood types from an evolutionary perspective?