Biology Essays & Term Papers

374 total

Introduction Genetics can be defined as a biological science of hereditary and variation in living organisms. The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding. However, the modern science of genetics, which seeks to understand the process of inheritance, only began with the work of Gregor Mendel in the mid-nineteenth century. Although he did not know the physical basis for heredity,

Photosynthesis occurs in two stages. The first stage is known as Light Dependent Process or Light Reactions, and it occurs in the �grana� region of the chloroplasts. In this stage, when light strikes the leaf, it excites chlorophyll electrons to a higher energy state. The energy is stored by forming a chemical called ATP (adenosine triphosphate). It is a chemical compound that is made up of the nucleotide adenine - ribose sugar bond, and that is bonded to three phosphate rad