How DNA Works Flashcards
What are the types of replication of DNA?
Conservative
Semiconservative
In conservative replication, what do the two daughter strands contain?
One helix is purely original DNA
One helix is purely new DNA
How does conservative replication work
The double helix remains intact and new strands form on the outside
In semiconservative replication, what do the 2 daughter cells contain?
Both have one strand of original DNA and one strand of new DNA
How does semiconservative replication work?
The double helix unzips and each strand replicates to produce a second new strand
Which enzyme is used to unzip the DNA double helix?
DNA helicase
Which bonds are broken in the unzipping of DNA?
Hydrogen bonds between bases
Which enzyme lines up and catalyses the linking up of nucleotides along the template strand?
DNA polymerase
What is DNA ligase used for?
Catalyses the formation of phosphodiester bonds between 2 strands of DNA