If two persons with' AB' blood group marry and have the sufficiently large number of children, these children could be classified as 'A' blood group: 'AB' blood group: 'B' blood group in 1: 2: 1 ratio. The modern technique of protein electrophoresis reveals the presence of both' A' and 'B' type proteins in 'AB' blood group individuals. This is an example of:
1. Incomplete dominance
2. Partial dominance
3. Complete dominance
4. Codominance

Figure shows a schematic plan of blood circulation in humans with labels A to D. Identify the label and give its function/s. 

Compared to those of humans, the erythrocytes in frogs are:

1. Without nucleus but with haemoglobin

2. Nucleated and with haemoglobin

3. Very much smaller and fewer

4. Nucleated and without haemoglobin

There is no DNA in:

In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?

1. R-repolarisation of ventricles

2. S-start of systole

3. T-end of diastole

4. P-depolarisation of the atria

Compared to blood our lymph has:

1. no plasma

2. plasma without proteins

3. more WBCs and no RBCs

4. more RBCs and less WBCs

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because 'O' in it refers to having:

Globulins contained in human blood plasma are primarily involved in:

1. defence mechanisms of body

2. osmotic balance of body fluids

3. oxygen transport in the blood

4. clotting of blood