In this article we will discuss about the structure of nucleus. This will also help you to draw the structure and diagram of nucleus. 1. It was discovered by Robert Brown (1831). 2. It is the major part of a eukaryotic cell that contains the genetic material. Prokaryotic cells have no nucleus as such. 3. Each nucleus remains enclosed in [...]
The following points highlights the five special types of chromosomes. The types are: 1. Polytene Chromosome or Giant Chromosome 2. B-Chromosome or Supernumerary Chromosome 3. Chimaera 4. SAT-Chromosome. Type # 1. Polytene Chromosome or Giant Chromosome: Object: To prepare acetocarmine squash of giant chromosome or polytene chromosome from salivary glands of Drosophila. Requirements: Drosophila melanogaster larvae. NaCl, acetocarmine solution (1%), [...]
In this article we will discuss about the structure of plasma membrane. This will also help you to draw the structure and diagram of plasma membrane. 1. The membrane which bounds the protoplasm (Fig. 292) of the cell of all living organisms including plants and animals is known as plasma membrane or cell membrane or plasmalemma. 2. Plasma membranes range [...]