The genetic makeup of an organism is designated by the term genotype, while the appearance of the organism is designated by the term phenotype.Genotype is the set of genes that carries specific information for a particular trait like character. For example though genes carry the information for height, the actual information of height if the person is tall or short, is due to alleles.Phenotype on the contrary is responsible for the outward, physical appearance of the organism. The phenotype includes physical characteristics, behaviours corresponding to such species, structures, organs, reflexes, etc.