Biology Grade 12
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20.1 Types of Chromosomes
20.2 Composition of Chromosome
20.3 The Chromosomal Theory of Inheritance
20.4 DNA as Hereditary Material
20.5 Chemical Nature of DNA
20.5 Chemical Nature of DNA
20.5.1 Double Helical Structure of DNA (Watson and Crick,s Model)
20.5.2 DNA Replication
20.5.3 The Meselson - Stahl Experiment
20.5.4 The Replication Process
20.6 What is a Gene?
20.6 What is a Gene?
20.6.1 One - gene-one - polypeptide Hypothesis
20.6.2 How DNA encodes protien Structure?
20.7 Cells use RNA to make Protien
20.7 Cells use RNA to make Protien
20.7.1 Three types of RNA
20.7.2 Transcription
20.8 Genetic Code
20.9 Translation
20.10 Mutations
