Three alternative models of DNAreplication.
Conservative model - The two parental strands reassociate afteracting as templates for new strands,thus restoring the parental double helix.
Semiconservative model.The two strands of the parental moleculeseparate, and each function sas a template for synthesis of a new, complementary strand
Dispersive model. Each strand of both daughter molecules contains a mixture of old and newly synthesized DNA.