The following points highlight the two main types of meiotic division. The types are: 1. The First Meiotic Division or Heterotypic Division 2. The Second Meiotic Division or Homeoptypic Division. Type # 1. The First Meiotic Division or Heterotypic Division: i. First Prophase Stage: This stage is divided into following stages: (a) Leptotene sub stage: The slide shows the first [...]
The following points highlight the two main parts of cyanobacterial cell. The parts are: 1. Outer Cellular Covering 2. Cytoplasm. Part # 1. Outer Cellular Covering of Cyanobacterial Cell: It can be differentiated into following parts: A. Slime layer or Mucilaginous sheath: Presence of mucilaginous sheath is the characteristic feature of cyanobacteria. It consists of fibrils reticulately arranged within the [...]
In this article we will discuss about the four phases of mitosis with suitable diagram and also learn about its significance. The mitosis is a part of somatic cell division which includes the division of the nucleus (called mitosis or karyokinesis) and the division of the cytoplasm (called cytokinesis). Strasburger (1875), a German botanist, was the first to work out [...]