Question

what would be the consequences of deficiency of hemoglobin in our doubts ?

Answer 1

Hemoglobin is responsible for red colour of blood. It supplies oxygen,the oxygen get combined with it and form oxyheamoglobin.
The deficiency leads to less oxygen in body.

Answer 2

Due to the deficiency of haemoglobin in blood, its oxygen carrying capacity decreases . As a result the production of energy by oxidation will become slower . One would fall sick and would feel fatigue most of the time .