HEREDITY
SEX LINKAGE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
A and B
|
|
|
Rh, only
|
|
|
A, B and Rh
|
|
|
None
|
Detailed explanation-1: -blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma.
Detailed explanation-2: -Blood is further classified as being either “Rh positive” (meaning it has Rh factor) or “Rh negative” (without Rh factor). So, there are eight possible blood types: O negative. This blood type doesn’t have A or B markers, and it doesn’t have Rh factor.
Detailed explanation-3: -ALTHOUGH anti-A and anti-B occur normally in all persons of blood Type O, anti-Rh (anti-D) is not normally found even in Rh-negative persons, unless they have had specific stimulation in the form of blood transfusion or incompatible fetus.
Detailed explanation-4: -If a person has blood group O, the H antigen remains unmodified. Therefore, the H antigen is present in the highest amounts in blood type O and in the least amounts in blood type AB. Two regions of the genome encode two enzymes with very similar substrate specificities-the H locus (FUT1) and the Se locus (FUT2).