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Showing posts with the label BOTANY SEM II

Bacterial Transformation

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  Bacterial Transformation Bacterial transformation is a process in which a bacterial cell takes up foreign or naked DNA from its surrounding environment and incorporates it into its own genetic material. This results in the acquisition of new genetic characteristics by the bacterial cell. Transformation is one of the major mechanisms of horizontal gene transfer in bacteria, along with conjugation and transduction. It plays an important role in bacterial evolution, adaptation, and genetic diversity. It is also widely used as an important technique in molecular biology and biotechnology. Discovery of Bacterial Transformation The phenomenon of bacterial transformation was first discovered by Frederick Griffith in 1928 while studying Streptococcus pneumoniae. He worked with two types of bacterial strains: the Smooth (S) strain and the Rough (R) strain. The S strain possessed a polysaccharide capsule and was pathogenic, whereas the R strain lacked a capsule and was non-pathogen...
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Medicinal Botany

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  Medicinal Botany: Medicinal Botany is the branch of botany concerned with the scientific study of plants used for medicinal purposes. It deals with their identification, nomenclature, classification, morphology, anatomy, cultivation, collection, preservation, chemical constituents, and therapeutic uses. Medicinal botany provides the botanical foundation for subjects such as pharmacognosy, phytochemistry, ethnobotany, pharmacology, and herbal drug technology.   Scope of Medicinal Botany The major areas covered under medicinal botany include: 1. Taxonomy and identification Accurate identification and classification of medicinal plants based on morphological, anatomical, and molecular characters. 2. Morphology and anatomy Study of roots, stems, leaves, flowers, fruits, and seeds, along with their internal anatomical features, which are important for authentication of crude drugs. 3. Cultivation and propagation Study of suitable soil, climate, irrigation, prop...
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