Molecular biology and genetics

Molecular biology is the branch of science that deals with the study of structure, function and genesis of cells, organelles, and macromolecules of living organisms.
The study of molecular biology has widespread applications covering genetic research, drug delivery systems, stem cell therapy and cancer treatment. The functioning of biological systems is based on the flow of genetic information from the nucleotides of the DNA to the RNA leading to the production of various cellular proteins. Thus, control is exercised only by modifying the various stages of protein synthesis. Hence, the ideal approach to the study of the subject is in understanding the genetic processes that are reflected as changes in protein reactions. Molecular biology is a specialised branch of biochemistry, the study of the chemistry of molecules which are specifically connected to living processes.
Of particular importance to molecular biology are the nucleic acids (DNA and
RNA) and the proteins which are constructed using the genetic instructions encoded in those molecules. Other biomolecules, such as carbohydrates and lipids may also be studied for the interactions they have with nucleic acids and proteins. Molecular biology is often separated from the field of cell biology, which concentrates on cellular structures (organelles and the like), molecular pathways within cells and cell life cycles. Genes are inherited as units, with two parents dividing out copies of their genes to their offspring. This process can be compared with mixing two hands of cards, shuffling them, and then dealing them out again.
Humans have two copies of each of their genes, and make copies that are found in eggs or sperm -but they only include one copy of each type of gene. An egg and sperm join to form a complete set of genes. The eventually resulting child has the same number of genes as their parents, but for any gene one of their two copies comes from their father, and one from their mother. This book would prove to be useful to students at all levels to understand the fundamental information in Molecular Biology and Genetics.