A more thorough explanation:

Whole blood refers to blood that contains all its components, including red blood cells, white blood cells, and plasma. It is often used in blood transfusions to replace blood lost due to injury or surgery.

Whole blood can also refer to a type of familial relationship. It is the relationship between individuals who share both parents and have unmixed ancestry. This is also known as full blood or entire blood.

For example, siblings who share the same mother and father have whole blood relations. They are considered to be full siblings because they share the same genetic material from both parents.

On the other hand, half-blood relations refer to individuals who share only one parent. For example, half-siblings share either the same mother or father but not both. They have a different genetic makeup and are not considered to have whole blood relations.

Overall, whole blood can refer to both a biological component and a familial relationship, depending on the context in which it is used.