The below mentioned article provides a study note on transposable elements. The term "transposon" was coined by Hedges and Jacob in 1974 for mobile discrete DNA sequences in the genome; such sequences are able to transport themselves from one location to the other locations within the genome. These sequences are also called transposable genetic elements. Transposable genetic elements are found [...]
The below mentioned article provides a study note on viral genomes. Viruses are a special class of infectious agents that are so small that they can be viewed only under electron microscope. A complete "viral particle" or "virion consists of a block of genetic material (DNA or RNA) surrounded by a protein coat and, sometimes by an additional membranous envelope. [...]
In this article we will discuss about:- 1. Meaning of Meiosis 2. Stages of Meiosis 3. Duration 4. Significance. Meaning of Meiosis: Chromosome number remains constant between the generations in asexually reproducing organisms since reproduction in them is based on mitosis. But in most species sexual reproduction does take place; it involves fertilization, i.e. fusion of male and female gametes. [...]