In this article we will discuss about Mitosis which is an indirect type of cell division:- 1. Subject-Matter of Mitosis 2. Process of Mitosis 3. Significance. Subject-Matter of Mitosis: Walter Fleming (1878), a German biologist, was the first to study the cell division. He stated that the nucleus of a dividing cell undergoes a series of changes. To this [...]
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 [...]
In this article we will discuss about the chromosome movement during cell division. The chromosome movement during cell division is chiefly due to the spindle apparatus. This apparatus contains three different types of microtubules: (a) Astral microtubules, radiating from centrioles (found in animal cells only); (b) Continuous or inter-polar microtubules, passing from one pole to the other, account for the [...]