How is DNA involved in heredity?

DNA, or deoxyribonucleic acid, plays a crucial role in heredity. It is the genetic material that passes traits from parents to offspring. In a process known as replication, DNA makes copies of itself, ensuring that each new cell receives a complete set of genetic instructions. These instructions determine an organism's traits, such as eye color and height. During sexual reproduction, DNA from both parents combines to create a unique combination of genetic material in the offspring. This process, known as genetic recombination, allows for genetic diversity and ensures the continuation of hereditary traits.