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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