The following points highlight the four main theories of genetic evolution. The theories are: 1. Lamarckism 2. Darwinism 3. Mutation Theory 4. Synthetic Theory. Genetic Evolution: Theory # 1. Lamarckism: This theory was propounded by Jean Baptiste Lamarck (1744-1829), a French biologist, through his numerous writings. There are four postulates of this theory as listed below: […]
4 Main Theories of Genetic Evolution | Cell Biology
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6 Main Steps in Chromosome Methodology
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The following points highlight the six main steps in chromosome methodology. The steps are: 1. Pretreatment 2. Fixation 3. Hydrolysis 4. Processing 5. Staining 6. Mounting. Step # 1. Pretreatment: Pretreatment is an important step in the course of preparations of plant tissue for studying the chromosome number and their morphology in order to establish […]
Study Notes on Chromosome Technique
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The below mentioned article provides a study note on Chromosome Technique used in Plants:- 1. Study of Mitotic Chromosomes 2. Study of Meiotic Chromosomes 3. Identifying Features of Cytological Plates. Study of Mitotic Chromosomes: Mitosis occurs in all meristematic cells which are located in root tip, shoot tip, young leaf tip and other growing organs […]
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