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Journal of Biological Sciences

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

  1. Levan, A., K. Fredga and A.A. Sandberg, 1964. Nomenclature for centromeric position on chromosomes. Hereditas, 52: 201-220.
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  3. Siddiqua, K.A., M.S. Islam, M.G. Hossain and A.T.A. Ahmed, 2000. A histological study of the spermatogenesis in Ompok pabda (Hamilton-Buchanan 1822). Bangladesh J. Fish. Res., 4: 185-189.
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