Question

In ABO system of blood group there are 4-types of:
A. Genotypes
B. Phenotypes
C. Antibodies
D. Alleles

Answer 1

Hint: The ABO blood group system is a popular method for classifying human blood. It divides blood into four types: A, B, AB, and O. The observable properties of an organism generated by the interaction of the genotype and the environment are referred to as phenotypes.

Complete Step by Step Answer:
Oswald Avery, Colin MacLeod, and Maclyn McCarty demonstrated that DNA (rather than proteins) can The ABO blood group system, which has phenotypes A, B, AB, and O, is used to figure out the type of surface antigens and antibodies existing in the donor's blood. If the RBCs agglutinate, the corresponding antibody ought to be lacking in the blood plasma. If the antigens are not present on the membrane of the RBCs, then the corresponding antibodies ought to be available in the blood plasma. Individuals over the age of 3-6 months have naturally occurring antibodies that develop without antigenic stimulation from the maternal placenta. These antibodies are of the IgM type.
Agglutination occurs between the surface proteins found on the surface of red blood cells in the ABO blood grouping system. This surface protein is known as an antigen or agglutinogen. The antigens are primarily glycolipids of two types: self-antigens and foreign antigens.
Blood groups are passed down through both parents. The ABO blood type is regulated by a single gene (the ABO gene), and three types of alleles have been identified based on classical genetics: I, I, and IB. The I prefix stands for isoagglutinogen, which is another word for antigen.
In Group A antigen A and antibody B are found.
In Group B antigen B and antibody A is found.
Group AB includes both A and B antigens but no antibodies (neither A nor B).
Group O contains neither A nor B antigens, as well as both A and B antibodies.
The correct option is B



Note: The ABO locus is a genetic locus that encrypts for the ABO blood group antigens. It comes in three allelic forms: A, B, and O. Each of a fetus's parents gives one of these three alleles. This results in four different phenotypes (blood types) and six different genotypes.