How many genes are responsible for?
ABO system of blood group.

How many genes are responsible for? Skin colour in human.

What are possible genotypes for blood group B.

How many genotypes and phenotypes are present in ABO blood group system ?

How are vitamins classified ? Name the vitamin responsible for coagulation of blood ?

Hepatic portal system collects blood from:

Human blood groups are genetically inherited. In a family A,B, AB, O blood groups are present. How is it possible to have such type of blood groups? Explain the phenomenon.

What are planets? How many planets are there in the solar system? Name them.

How many genes are present in mycoplasma, E.coli, drosophila, Oryza sativa and Homo sapiens?