DNA Replication


This is based on my 'DNA Replication' mind map which can be found here: https://www.goconqr.com/en-GB/p/4973267 :)
Bee Brittain
Flashcards by Bee Brittain, updated more than 1 year ago
Bee Brittain
Created by Bee Brittain about 8 years ago

Resource summary

Question Answer
The method of DNA replication is described as being __________ semi-conservative
The nature of DNA being semi-conservative ensures what? It ensures genetic continuity between generations of cells
Describe roughly the first step in DNA replication DNA Helicase breaks the hydrogen bonds linking the two base pairs of DNA
When the bases between the nucleotide bases are broken, what happens to the DNA Helix where DNA helicase has acted? The helix unwinds in to two non-linked strands
When the two strands are exposed they are known as __________ strands Template strands
After the nucleotide chains become template strands, what happens? free complementary DNA nucleotides are attracted to exposed bases on template strands and bind to their specific base pair
After, nucleotides are joined together in what type of reaction? And by what enzyme? Condensation reaction by DNA polymerase. These form the 'missing' polynucleotide strand on each of the two original strands of DNA
DNA replication is semi-conservative. What does semi-conservative mean? Each of the daughter DNA molecules contains one strand from the original DNA. So half of the DNA has been saved and built into each of the new DNA molecules.
Show full summary Hide full summary


AS Biology Unit 1
Lung Structure
Elena Cade
Elena Cade
Pathogens and Immunity
Elena Cade
AQA A2 Biology Unit 4: Populations
Charlotte Lloyd
Function and Structure of DNA
Elena Cade
Biological Definitions
AQA AS Biology Unit 2 DNA and Meiosis
AQA Biology 12.1 cellular organisation
Charlotte Hewson
Julia Romanów
AQA Biology 11.2 mitosis
Charlotte Hewson