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Journal of Biological Sciences

Year: 2003  |  Volume: 3  |  Issue: 5  |  Page No.: 460 - 465

Chromosomal Studies on (Hamilton)

S. Datta, M.M. Rahman, M.A. Haque, M.M. Islam and M.F.A. Mollah

Abstract

Colchicine(0.05%) treated tissues of day-old larvae of Ompok pabda were observed under a research microscope after hydrolysis, mordanting and staining with 10% HCl, 2% aqueous solution of iron alum and 0.5% haematoxylin for 10 minutes, 6 minutes and 10 minutes respectively. Photomicrographs were taken from critically selected plates. From the photomicrographic enlarged prints chromosome number 2n=42 was counted, of which only 18 could be measured which consisted of 10 metacentric, 7 submetacentric and 1 subtelocentric. Length of the measured chromosomes varied from 1.1 to 3.9 μ .

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