In this article we will discuss about the transposable elements in the eukaryotic organisms. Transposons have been discovered in eukaryotic organisms also, e.g., controlling elements in maize, Tam1 elements in Antirrhinum majus, Ty elements in Yeast and FB elements in Drosophila. These elements can be divided into two main classes. 1. This class includes the transposable elements that are similar [...]
In this article we will discuss about:- 1. Meaning of Chromosomes 2. Chromosome Number 3. General Morphology. Meaning of Chromosomes: In 1875, Strasburger discovered thread-like structures which appeared during cell division. Later, these structures were termed as chromosomes (chroma = colour; soma = body) by Waldeyer in 1888 since they showed affinity for basic dyes and could be stained deeply, [...]
The following points highlight the top five techniques of chromosome banding. The techniques are: 1. C-Bands 2. G.Bands 3. Q-Bands 4. N-Bands 5. Other Techniques of Chromosome Banding. Chromosome Banding: Technique # 1. C-Bands: The technique of C-banding originated after the work of Pardue and Gall who reported that constitutive heterochromatin can be stained specifically by Giemsa-solution. Each chromosome possesses [...]