Pathology General b7da018a A2 concentration in thalassemia trait is ? A 1 B 1-2.5 C 2.5-3.5 D >3 .5 High-Yield Explanation Ans. is 'd' i.e., > 3.5 T. Major Intermedia T. Minor J Genetics Homozygous Double Heterozygot es heterozygotes Hb F 30-90% (20-100%) 0-5% ) HbA2 < 3.5% <3.5% 3.6 -8%