what is genotypic variation of streptococcus pneumoniae
BACTERIAL VARIATION. Any change in the genotype of a bacterium or its phenotype is known as variation. Genotypic variation can occur as a result of changes in the genes by way of mutation, loss or acquisition of new genetic elements. These variations are heritable.Phenotypic variations are seen temporarily when bacteria are grown under certain environmental conditions. These variations are not heritable.enotypic variation can occur as a result of changes in the genes by way of mutation, loss or acquisition of new genetic elements. These variations are heritable. Phenotypic variations are seen temporarily when bacteria are grown under certain environmental conditions.