A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive and O positive. The blood group of the adopted son is –

A person with 'AB' blood group is sometimes called a universal recipient because of the :

With reference to the blood in a normal person, which one of the following statements is correct?

If the red blood cells (RBCs) of human blood are isolated and are diluted in normal saline (an isotonic solution to blood), what will happen to the RBCs?

What is the pH level of blood of a normal person?

The blood pressure (systolic and diastolic) of a healthy man is (in Hg) –