The face structure, body structure, skin color and even behavior of human being depend upon the genes of ancestors. This is the genetic study that unveils the hidden aspects of heredity and all its belongings. Haplotype, Serotype, Genotype and Phenotype are the names of some branches of genetic study.
Human’s information is all hidden in his genes. Genes are not just micro-organisms but they have every information about us , what we do, why the eye color we have is brown or black, why our hair are not like or like our parents, and most interestingly why we sometimes, look alike our grandparents.