Laboratory Testing

Blood group AB positive is known as the universal recipient, as this blood type can receive blood from donors of any ABO blood group. This is because individuals with AB positive blood have both A and B antigens on their red blood cells and do not have antibodies against A or B antigens.

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The most severe form of erythroblastosis fetalis is that resulting from Rh incompatibility. But you can have erythroblastosis fetalis with ABO incompatibility as well. And this can occur with any child, even the first, and even with an Rh-negative child. However, if you're referring to Rh-incompatibility erythroblastosis fetalis, the answer to your question is, "Not usually" (assuming she hasn't had a previous Rh-positive child). In Rh-incompatibility, erythroblastosis fetalis occurs with the woman's second Rh-positive child. The first Rh-positive child's blood gets into the mother's bloodstream (e.g. at childbirth). The mother's blood makes antibodies to Rh. Since the first child is already born, this does not affect the first child. Then, when she has a second Rh-positive child, her antibodies cross the placenta and attack that child's blood cells. On the other hand, if the mother is exposed to the Rh factor of the first child's blood earlier in the pregnancy somehow, then I suppose she could develop enough antibodies to cause a problem for that first child.

Your question is incomplete, because you did not give the baby's blood type. If you just want to know if different blood types can have children together, the answer is yes. I can tell you that an O negative father and A negative mother can only have A negative or O negative children.

A person with Type B Rh negative blood can receive B Rh negative red cells or O Rh negative red cells. If no Rh negative blood is available, this person could receive B or O Rh positive blood, but this would not be recommended for women of child bearing age as the exposure to the D antigen (D is the Rh positive part) may cause this person to form an antibody against the D (Rh) antigen (Anti-D). Anti-D may cross the placenta and attach to D positive cells in the fetus leading red cell destruction and other serious consequences.

First and foremost, the purpose of heat fixing is to drive stain into the bacterial cells, which in this case, you are staining the background, so there is not a need for heat fixing.

Next, the process of heat fixing will shrink the cell by a little. This sorts of support the first reason as since there isn't the need to heat fix, then don't. By not heat-fixing, we actually see a more accurate morphology, arrangement and size of thr bacterial cell.

Hope that my answers helps 😊

No. The O+ gene is exclusive, meaning that if you are O+, your body only has the O+ gene, so your child can't be anything other than 0+ as well.

He can only be A+ if the one of the parents is AB+ or A+.

It MAY be possible but more information is needed about the father. If he is Rh positive then he can be Rh+Rh- or Rh+Rh+.

If the Rh positive father has one Rh+ and one Rh- allele, then 50% of his children will get Rh+ from him (and Rh- from the mother) to be Rh positive, and 50% will get Rh- from him (and Rh- from the mother) to be Rh negative.

So if father is Rh+Rh- and mother is Rh-Rh-:
50% children Rh+Rh- (positive - may cause problems if it is the second child)
50% children Rh-Rh- (negative - will be no problems with a Rh- mother)




BUT if the Rh positive father is Rh+Rh+ then all of his children with a Rh+ from him and Rh- from the mother. In this case all children will be Rh positive.


So if the father is Rh+Rh+ and the mother is Rh-Rh-:
100% children Rh+Rh- (positive - may cause problems if it is the second child)


Hope this is helpful.

Complementary base pairing occurs only between the probe and the target gene.

You dad can either be O, AB, A,or B and he can be positive or negative.

It depends- each person has two alleles, and the combination determines what blood type they are. (Possibilities are A, B, and O.)

Each parent contributes one allele (one of their pair, at random) to the child.

But there are several factors that determine a child's blood type. A and B are 'dominant', meaning that if the parent gives a child and A or a B allele, then that is what the child's blood type is, regardless of if the other allele the child has is an O. But if one parent gives an A and the other a B, then the child is AB, since A and B are as equally dominant.

But if both parents give the child an O, then the child will be an O.

But it is possible to have an O child if neither parent is O, because O is 'recessive', or won't show up if there's a dominant allele.

For example:

Say the mother's alleles are A,O. She would be a type A.

And if the father was the same...

The baby could have 3 possible allele combinations (AA, AO, or OO).

Either of the first two combinations would mean that the child was an A, but it would also be possible for the child to be an O, although less likely (33% chance).

So to answer your question, it's not a matter of receiving a blood type from one parent, but the child's blood type is the result of both parent's blood types.

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Packed red blood cells type A do not contian enough Anti-B antibody to cause a reaction in AB type people. The plasma (liquid portion of blood) contains the antibodies. This is mostly removed when blood products are processed in a blood bank. Antibodies are what causes red blood cells to agglutinate (clump)

Yes it is possible. One of the parents would have to be Type A (AO) and one parent would have to be Type B (BO). Also one parent would have to be positive and one would have to be negative (referring to Rh). It doesn't matter which parent is which and it also doesn't matter if it is A+ and B- or A- and B+. Either of these two situation could produce all four different blood types.

which blood group can be donate to all other groups?

"O" positive blood group. it's called universal donor.

The baby actually has the ability to be positive or negative for the Rh trait depending on if the mother's genotype. If her genotype is Rh+Rh+ then the baby will be Rh+Rh- and positive for Rh, however if the mother is Rh+Rh- then there is a 50% chance the baby will be positive (Rh+Rh-) and a 50% chance the baby will be negative (Rh-Rh-).

To achieve separation. What were you putting into the centrifuge? I know in Biochem usually centrifugation is a preparative step performed to isolate a single organelle of a cell. But centrifugation can also be analyical, for instance if you wanted to measure the density of whatever substance is in the tube.

It uses the same procedure as adult DNA cloning to start with. The created embryo will be allowed to grow for around 2 weeks. Its stem cells would be taken and encouraged to grow into a human organ.

A centrifuge separates out blood components by their various densities. The red blood cells (RBCs) are denser and move to the bottom of the tube. The plasma fraction is the least dense and will float as the top layer. The "buffy coat" which contains the majority of platelets will be sandwiched between the plasma and above the RBCs.

It depends on the food. If you drink a beverage heavy on glucose, it only takes minutes. On the other hand, if your food contains few carbohydrates and much fat and proteins, it will not necessarily rise your blood glucose level noticeably at all, and at any rate will take longer.

No, an O negative person cannot receive B positive platelets in a transfusion. Blood types must be compatible to prevent adverse reactions. O negative individuals can only receive O negative blood products.

Food in the laboratory can lead to contamination of experiments, equipment, or samples. It can also attract pests, posing a health hazard and compromising the safety of the laboratory environment. Ingesting contaminated food can also be dangerous if exposed to hazardous chemicals or biological materials in the lab.