<prompt> Which among the following is the major hemoglobin found in fetus?Hb Gower-1Hb FHb Gower-2Hb Poland  <response>: Hb F 22 is the major hemoglobin of fetal life. After 34 to 36 weeks gestation the percentage of Hb A rises, whereas that of Hb F decreases. Hb Gower-1 22 is the major hemoglobin in embryos younger than 5 weeks gestation. Hb Gower-2 22 has been found in embryos with a gestational age as young as 4 weeks and is absent in embryos older than 13 weeks. Hb Poland 22 is found in young embryos. Ref: Palis J., Segel G.B. 2010. Chapter 6. Hematology of the Fetus and Newborn. In J.T. Prchal, K. Kaushansky, M.A. Lichtman, T.J. Kipps, U. Seligsohn Eds, Williams Hematology, 8e. 