The genotype is the piece of the hereditary cosmetics of a cell, and in this way of any person, which decides one of its attributes (phenotype).The genotype is one of three factors that decide phenotype, alongside acquired epigenetic factors and non-acquired natural variables. Not all living beings with a similar genotype look or act a similar way since appearance and conduct are adjusted by ecological and developing conditions. Moreover, not all living beings that resemble the other the same fundamentally have a similar genotype.