Notes on Chromosomes. After reading this article you will learn about: 1. Introduction to Chromosomes 2. Shape of Chromosomes 3. Size 4. Number 5. Morphology 6. Characteristic Features 7. Classification 8. Special Types 9. Some Other Chromosomes 10. Role of Chromosomes in Heredity 11. Change in Chromosomes Structure. Contents: Notes on Introduction to Chromosomes Notes on the Shape of Chromosomes [...]
In this article we will discuss about the Heterochromatin and Euchromatin in the Nucleoplasm. In the nucleoplasm of interphase nucleus a dark staining network is seen which is formed of chromatin. When chromatin is stained by various procedures such as the feulgen reaction which is specific for DNA and examined under light microscope, some regions are stained darkly whereas the [...]
In this article we will discuss about the Physicochemical Organization of Chromosome. The major chemical components of the chromosomes are DNA, proteins (histones and non-histones) and small amount of RNA. Besides these, calcium and some other minerals are also present. Histones are basic proteins that are charged positively at neutral pH. Non-histone proteins are acidic. Histones are small proteins containing [...]