Name the four types of blood groups present in human beings.

Name three types of blood corpuscles.

Name the three types of blood vessels?

Name the four main types of tissues.

Name the functional group present in methoxy methane

Name the different types of teeth present in man.

Name four types of psychotropic drugs.

Name the types of asexual reproduction present in Planria.

Which sex chromosomes are present in human beings?

ABO blood group is based on:

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.