In this article we will discuss about the evolutionary relationships of bacteria. The early investigators considered bacteria as animalcules and place them with the Protozoa. This viewpoint was held up to the middle of the last (nineteenth) century. Some assigned them a position of the border line between plants and animals. They place this group […]
Evolutionary Relationships of Bacteria | Microbiology
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Life History of Bacillus Subtilis | Bacteria
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In this article we will discuss about the life history of bacillus subtilis. It is popularly known as Hay bacillus. It is a common example of a rod-shaped bacterium. A rich culture of the bacterium can easily be prepared in the laboratory. Take hay and chop it into small pieces. Put the chopped bits in […]
Theories on Living Hypothesis of Viruses | Virology
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The following points highlight the two main theories on living hypothesis of viruses. The theories are: 1. Organism Theory 2. Molecular Theory. Theory # 1. Organism Theory: The supporters of the living hypothesis argue that growth and reproduction are chief distinctive characteristics of living things (organisms). Viruses possess both. They grow, reproduce and undergo mutations […]
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