This is the humans haemoglobin which was discovered in 1961, hb- gower 1 which consists of 2 zeta chains and 2 epsilon chains existing during embryonic haemoglobin cycle which is a tetramer produced in the blood island in the embryonic yolk sac during mesoblastic stage.
The main purpose of lipids is to provide the body with energy. Another function of lipids is to provide the body with the vitamins it needs. There are also other functions and purposes but i have described the main points.