BY 123 Lecture Notes - Lecture 16: Dna Replication, Dna Virus, Bacteriophage
Document Summary
Dna replication is the process by which a dna molecule is copied and how the cells repair their dna. Created the double helix model of dna. Transformation is when a chemical component of the dead pathogenic cells caused a heritable change. When he killed s-cells dna was in environment. 2 identical to make 2 daughter cells. In the conservative model the two parental strands reassociate after acting as a template for new strands, thus restoring the parental helix. In the semiconservative model the two strands of the parental molecule separate and each functions as a template for synthesis of a new complementary strand. In the dispersed model each strand of both daughter molecules contain a mixture of old and newly synthesized dna. Origins of replication are the particular sites on the dna molecule where replication begins. Replication fork is the y-shaped region where the parental dna is being unwound.