Role on Genes in us and the next generation.Genes are found in our chromosomes found inside cells and is made of DNA. It is estimated by the Human Genome Project that every human has two copies of each gene i.e. one from each parent and have between 20,000 and 25,000 genes. Genes plays a big role in determining physical traits like our looks, talk, style, walk, action, colour, hair, height, body, etc. The genes carry vital details of how and what we look like and it is passed from generation to generation. We all refer to genes in our talks like, Its in my/our/their genes. When a baby is born, we have heard our elders saying, his/her eye is same like me, or like our mother, etc.