DNA molecule has a “direction.” Complementary strand runs in opposite direction The 2 strands of DNA lead us to replication… Watson and Crick in their 1953 publication in Nature said the following: has not escaped our notice that the specific pairing we have postulated immediately “It suggests a possible copying mechanism for the genetic material” DNA Replication There were three alternative models of DNA replication: Semi Conservative Through experimentation we discovered that DNA replicates semiconservatively. Which means each strand of the parental DNA acts as a template for a new strand, which is added by base pairing. DNA replication occurs in 3 basic steps Starting point The parent molecule has 2 complementary strands of DNA. Each base is paired by hydrogen bonding with its specific partner. A with T and C with G DNA Replication An overview Step 1 – The DNA strands separate. DNA Replication An overview Step 2 –
DNA molecule has a “direction.” Complementary strand runs in opposite direction The 2 strands of DNA lead us to replication… Watson and Crick in their 1953 publication in Nature said the following: “It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material” DNA Replication There were three alternative models of DNA replication: Semi Conservative Through experimentation we discovered that DNA replicates semiconservatively. Which means each strand of the parental DNA acts as a template for a new strand, which is added by base pairing. DNA replication occurs in 3 basic steps Starting point The parent molecule has 2 complementary strands of DNA. Each base is paired by hydrogen bonding with its specific partner. A with T and C with G DNA Replication – An overview Step 1 The DNA strands separate. DNA Replication – An overview Step 2
AP%20Chapter%209%20and%2010%20Notes%202016.docx