What is Genetic Variance?

Genetic differences are individual physiological and psychological differences caused by genetic genes. Modern genetic science shows that there are 23 pairs of chromosomes in each nucleus of a normal human body, with a total of more than 50,000 genes that can determine the different hereditary traits of the offspring. The main component of a gene is a chemical called DNA. DNA undergoes two steps of transcription and translation, controls protein synthesis, and stores, replicates, and transmits genetic information. ^[1]