Yes
No, blood group is determined by the presence or absence of specific antigens on red blood cells, whereas genotype refers to the genetic makeup of an individual. Blood group is not solely determined by genotype, as multiple genes can influence blood type.
antigen
The ABO blood group antigens are located on the surface of red blood cells. These antigens determine an individual's blood type (A, B, AB, or O) and are inherited from their parents. The presence or absence of A and B antigens determines a person's blood type.
Yes, blood groups are a classic example of inheritance in humans. Blood group inheritance follows patterns determined by specific genes passed down from parents to their offspring. These genes determine the specific type of antigens present on red blood cells, which determine an individual's blood group.
ABO blood group expression is an example of a genetic trait that is determined by multiple alleles. The ABO blood group system is controlled by three alleles (IA, IB, i), which determine the presence or absence of antigens on red blood cells. The combination of these alleles in an individual's genotype determines their blood type.
It is the antigens that determine ones blood group.
An individual with an "O" blood type can be transfused to any other blood type, since type "O" blood is the universal blood type. This includes an "A" blood type.
Antigens or RH factor
This is a homogenous state of the gene coding for antigen A (consequently blood group A) on the plasma membrane of the erythrocytes.There are three genes that have been isolated as being responsible for blood groups i.e A,B,O.A and B codes for the presence of the respective antigen on the R.B.C while O codes for the absence of both antigen A&B.Gene A and B are co-dominant and thus an individual with genotype AB has blood group AB because both genes express themselves phenotypically.Genotype AO will still be phenotypically expressed as blood group A just like AA.
Yes, it is possible.
No, it is not possible for an individual with the AS blood group to produce offspring with the AA blood group. The AS blood group indicates that the individual carries one A allele and one S allele (which is associated with sickle cell trait). For an offspring to have the AA blood group, both parents must provide an A allele, which cannot occur if one parent has an S allele.
Blood type does not determine whether marriage is allowed or not.