CHROMOSOME: THE BASIS OF HEREDITARY – FULL EXPLANATION LOCATION AND STRUCTURE OF CHROMOSOMES Chromatin granules (thread – like structures) found in the nucleus of eucaryotic cells are the precursors or raw materials of chromosomes. Chromosomes occur in pairs known as homologous chromosomes. Each chromosome is made up of two threads called chromatids joined […]
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BIOLOGY OF HEREDITARY AND VARIATION (GENETICS) DEFINITIONS OF GENETIC TERMS What is Genetics? Genetics is the scientific study of heredity and variation in all living things. The word genetics was coined by Dilliam Bateson (1906). What is hereditary?: Hereditary/Inheritance is the transmission and expression of characters or traits from parents to offspring. It accounts for
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HEREDITARY VARIATION AND CAUSES What is Hereditary? Hereditary variation is the differences among individuals which can be passed from the parents to their offspring (progenies). NOTE: No two offspring inherit exactly the same set of characteristics from parents except in identical twins. Hereditary variation arises because of Genetic reshuffling during meiosis due to independent assortment
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