This document provides an overview of cloning, including its history, classifications, procedures, applications, and ethical concerns. It begins with definitions of cloning and its relationship to biotechnology. It then discusses major milestones in cloning research from the 1950s to present day. It classifies cloning into natural, molecular, cell, and organism cloning. It describes procedures like therapeutic, reproductive, and replacement cloning. It outlines applications for genetically modified organisms, transgenic animals and plants, infertility treatment, organ transplants, and health improvements. Finally, it discusses scientific concerns like high failure rates and potential health issues, as well as ethical aspects.