Cell Biology Cell biology is the branch of biology that studies the structure and function of cells, which are the basic units of life. It focuses on cell organelles, cell division, metabolism, and communication between cells. Genetics Genetics is the science that studies heredity and variation in living organisms. It examines how traits are passed from parents to offspring through genes and how genetic information is inherited and expressed. Molecular Biology Molecular biology studies biological processes at the molecular level, especially the structure and function of molecules such as DNA, RNA, and proteins that control genetic information and cellular activities. Evolution Evolution is the study of how living organisms change over time through processes such as natural selection, mutation, and genetic variation. The concept was strongly developed by Charles Darwin. Ecology Ecology is the branch of biology that studies the relationships between organisms and their environment, including interactions within populations, communities, and ecosystems.