The following points highlight the five main classes of chemical compounds in chromatin. The classes are: 1. Nucleic acids 2. Basic proteins or histones (protamines in sperm nuclei of some fishes and birds) 3. Acidic proteins (Non-Histones) 4. Lipoproteins 5. Associated inorganic molecules. Chemical Compounds in Chromatin: Class # 1. Nucleic Acids: The nucleic acids are of two types: (i) [...]
The below mentioned article provides a close view on the Deoxyribonucleic Acid (DNA):- 1. Structure of DNA 2. Alternative DNA Models 3. Single Stranded DNA 4. Localization 5. Different Forms 6. Denaturation and Renaturation 7. Nucleic Acid Hybridization 8. Replication 9. Replication of DNA in Prokaryotes 10. Mechanism of DNA Replication 11. Replication of Viral DNA 12. Replication of DNA [...]
In this article we will discuss about the replication of eukaryotic chromosome. Taylor in 1958 used radioactive thymidine (3H-thymidine) to label Viciafaba root tip chromosomes. He showed that the chromosomes replicated in a semiconservative manner, and proposed that each chromatid was made up of a single DNA molecule. Thus each sister chromatid is composed of one of the two progeny [...]