Genes

• Defenition of gene does not give justice to the characters of egenes as intricate molecular units that manifest themselves as critical contributors to celll structure and function. 
• At the molecular level, gene is a segemnt of DNA that has information to produce a functional produce. 
• Functional product of most genes is a polypeptide- linear sequence of amino acids that folds into units that consitute proteins. 

Living cells are composed as biochemicals 

• Important function of these small organic molecules is their role as the building blocks for the synthsis of larger molecules. 
• Important catergories of larger cellular molecules are nucleic acids, proteins, carbohydates and lipids. 

Each cell structure may diffrent proetins that determine cell structure and function 

• To a great extend, characteristics of a cell depend on types of proteins that it makes. 
• Entire colelction of protens that a cell makes at a given time is proteome. 

DNA stores information for protein synthesis

• Genetic material of living organisms is composed of a substance called deoxyribonucleic acid (DNA)
• DNA stores information needed for syntheis of all proteins. 
• Main function of genetic blueprint is the code for the production of proteins in the correct cell.
• DNA is composed of a linear sequence of nucleotides, each of which contain one of four nitrogen containing bases, adenine, thmine, guanine and cytosine. 
• Process of using a gene sequence to affcet the charactertics of cells and organisms is referred to as gene expression. 

Traits 

• Trait is any characteristics that…