A gene is the basic unit of heredity in a living orgnism. All living things depend on genes. Genes hold the information to build and maintain their cells and pass genetic traits to offspring. Genes made up of DNA, act as instructions to make molecules called proteins.
Genes are sections or segments of DNA that are carried on the chromosomes and determine specific human characteristics, such as your looks, height, weight, color (skin or hair), talent, personality, etc. Genes are the basic factors of life which is connected to human birth, age, sickness and death.