DNA Replication (AQA A-Level Biology): Flashcards
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Purpose of DNA replication
Purpose of DNA replication
To give daughter cells complete genetic instructions
Semi-conservative replication meaning
Semi-conservative replication meaning
Each new DNA has one original strand + one new strand
DNA helicase function
DNA helicase function
Breaks H-bonds between bases, unwinds double helix
DNA polymerase function
DNA polymerase function
Joins nucleotides together via phosphodiester bonds
Four bases required for DNA replication
Four bases required for DNA replication
Adenine, guanine, cytosine, thymine
Adenine pairs with
Adenine pairs with
Thymine
Guanine pairs with
Guanine pairs with
Cytosine
Type of bonds formed by DNA polymerase
Type of bonds formed by DNA polymerase
Phosphodiester bonds
Composition of each replicated DNA molecule
Composition of each replicated DNA molecule
One original strand and one newly synthesised strand
Number of DNA molecules produced from one original
Number of DNA molecules produced from one original
Two