染色体显带机制研究的若干进展

Some Advances on the Studies of Chromosome Banding Mechanisms

染色体分带技术的迅速发展,尤其是当今植物染色体高分辨 G-带技术的突破,不仅为植物染色体工程中的染色体鉴别、基因定位等提供了重要手段,而且对细胞分类学、物种生物学、细胞地理学、体细胞遗传学、以及育种学、人类遗传学和环境保护等领域的应用与发展,发挥着越来越大的作用。众多学者对染色体显带机制进行了研究,取得了许多进展。最早,用 DNA 的变性与复性理论作为染色体显带的基础,认为染色体 DNA

Some advances have been reviewed on the studies of chromosome banding mechanism in the differential extraction of nucleoprotein,DNA/protein inter- action and dye/nucleoprotein in eractiono The role of nonhistone protein (NHP)in chromosme banding and the reasons why nucleoprotein is more capable rof resisting the extraction during chromosome banding processes in band egions than interband regions are discnssedo