The following points highlight the five main components of the nucleus. The components are: 1. Nuclear envelope 2. Nuclear Sap or Nucleoplasm 3. Nucleolus 4. Chromatic Reticulum 5. Chromosomes. Nucleus: Component # 1. Nuclear Envelope: The nuclear membrane or karyotheca is the outer boundary of the nucleus. It is found in the nuclei of all the eukaryotic cells. Electron [...]
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 [...]
In this article we will discuss about Meiosis which is a type of indirect cell division:- 1. Subject-Matter of Meiosis 2. Types of Meiosis 3. Meiocytes 4. Process 5. Significance. Contents: Subject-Matter of Meiosis Types of Meiosis Meiocytes Process of Meiosis Significance of Meiosis 1. Subject-Matter of Meiosis: In the sexually reproducing organism two sex cells or gametes containing haploid [...]