I think you might be asking about genetics, which is the scientific study of genes, heredity, and variation in living organisms. Genes are units of heredity that are passed down from parents to their offspring and are responsible for many of an organism’s traits, including physical characteristics, behavior, and susceptibility to certain diseases.

Genetics is a very important field of study that has many practical applications, such as in medicine, agriculture, and conservation. Understanding genetics allows scientists to develop new treatments for genetic disorders, breed crops that are more resistant to pests and disease, and preserve endangered species by ensuring genetic diversity.