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Thursday, March 29, 2012

Molecular Biology: Relationship with Biochemistry and Genetics


Molecular biology is a discipline of biology and it deals with the molecular basis of biological activity. This stem interconnects other areas of biology and chemistry, mainly genetics  and biochemistry. Molecular biology largely concerns itself with understanding the interactions between the various systems of a cell, including the interactions between the different types of macromolecules e.g., DNA, RNA and protein biosynthesis as well as learning how these interactions are regulated.




Fig. Schematic relationship among molecular biology , biochemistry,  and genetics.

Biochemistry is the study of the chemical substances and vital processes occurring in living  organisms. Biochemists give attention heavily on the role, function, and structure of bimolecules. Chemistry of biological processes and the synthesis of biomolecules are examples of biochemistry.

Genetics is a branch of biology and is the science of genes, heredity, and variation in living organisms. It  deals with the molecular structure and function of genes, gene behavior in context of a cell or organism (e.g. dominance and epigenetics), patterns of inheritance from parent to offspring, and gene distribution, variation and change in populations. Since genes are universal to living organisms, genetics can be applied to the study of all living systems.

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