Flagella singular: flagellum are long, thin, whip-like structures that are attached to a bacterial cell that allows the bacteria for movement. Function They helps in movement (locomotion) of bacteria from one place to another. Structure of Flagella in Bacteria Composed of three structures in bacteria. Gram Positive Bacteria                    Gram Negative Bacteria In gram positive bacteria two rings are present. S ...

(Procedure of gram staining method Helps to Classify Bacteria into Two Groups)­. Gram staining method is used to distinguish and classify bacterial species into two large groups (gram positive and gram negative). The name comes from the Danish bacteriologist Hans Christian Gram who developed the technique.   Apparatus/Chemicals for Gram Staining Method The apparatus need to use in Gram Staining Technique are droppers, ...

Plasmids are small, Circular, Double Stranded DNA molecules that is distinct from the chromosomal DNA of the cell. The term Plasmid was discovered by Tatum. And was coined by a Lederberg and Hays. Along with main genetic material nucleoid and There is also present an extra chromosomal genetic material called plasmid. In modern age, different species of bacteria has different ...

Darwin formulated his ideas of theory of evolution by natural selection by 1844. There are following points of his theory of evolution by natural selection on the basis of evolution. Evolution The change in the heritable traits of a population over successive generations, as determined by shifts in the allele frequencies of genes is called evolution. All contemporary organisms are ...

Many theories were put forward on basis of evolution (such as theory of Inheritance of Acquired Characteristics Jean Baptiste Lamarck), how organisms evolve according to time by the environmental changes or organisms modify themselves in order to survive. Jean Baptiste Lamarck (1744—1829) Jean Baptiste de Lamarck (1744—1829) was a French zoologist who gave Theory of Inheritance Acquired Characteristics. He studied animal classification. He gave a ...

Genetic conservation is a science that aims to apply genetic methods to deal with the maintenance, loss, and restoration of biodiversity. Researchers involved in conservation genetics come from a variety of fields including population genetics, molecular ecology and biology, evolutionary biology, and systematics. A short list of studies a conservation geneticist may research include: Phylogenetic classification of species, subspecies, geographic ...

Plant varieties or variety is the population of plants that differ consistently from typical form of species, occurring naturally in a geographical area. In botanical nomenclature, variety is a rank below that of species: As such. it gets a ternary name (a name in three parts). The term is also applied incorrectly to forms produced in cultivation, which are called ...

The process of manipulation of genes, outside the normal reproductive process of any organism is called genetic modification (GM). Genetic modification is also called as genetic engineering or gene splicing (DNA of an organism is spliced and foreign gene is inserted). Types of Plants on the Basis of Genetic Modification The plants are divided on the basis of their genetic ...

Plant breeding is the purposeful manipulation of plant species in order to create desired genotypes and phenotypes for specific purposes. This manipulation involves either controlled pollination, genetic engineering, or both. It is followed by artificial selection of progeny. Plant breeding often leads to plant domestication. Plant breeding has been practiced for thousands of years, since near the beginning of human ...

Bacterial cell walls are made of peptidoglycan (also called murein). on the basis of their bacterial cell wall the bacteria are of two types. The first one is gram positive bacteria and second one is gram negative bacteria. The difference between these two are as follow. Gram Positive Bacteria Gram Negative Bacteria Four amino acids are present in gram positive ...