DNA Topology class 1: Topoisomerase

Role of Topoisomerase I and Topoisomerase II in DNA topology Topoisomerase is a class of enzyme which helps in winding and unwinding of DNA. Three forms of DNA is most prevalent in nature: circular, linear and supercoiled. Circular DNA is covalently closed and does not have any interruption in between nucleotides. Circular DNA is found in

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Extrachromosomal inheritance class 2: organelle DNA

Introduction to chloroplast and mitochondrial DNA   Organelle DNA Cytoplasmic DNA is present in membrane-bounded organelles inside the cell. Chloroplast and mitochondria are most common organelles having their own DNA. This DNA helps them for the synthesis of their own protein molecules to perform different biological functions. Chloroplast DNA Photosynthesis occurred within chloroplast provides an

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Extrachromosomal inheritance class 1: Introduction to maternal inheritance

Influence of maternal side on the inheritance of characters Nuclear DNA is the basis for inheritance of almost all type of phenotype of ours. It inherits in a specific fashion from parents to their offspring. Though all genes are inherited in Mendelian style, some genes present in the cytoplasm of the cell, inherent in a

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