DNA Replication (Leaving Cert Biology): Flashcards
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DNA replication
DNA replication
Process that makes exact copy of DNA
DNA molecules produced from 1 original
DNA molecules produced from 1 original
Two identical DNA molecules
Location of DNA replication
Location of DNA replication
Nucleus
When DNA replication occurs
When DNA replication occurs
When cell is not actively dividing
Chromatin
Chromatin
Long, thin fibres of DNA when cell not dividing
Semi-conservative replication meaning
Semi-conservative replication meaning
Each new DNA has 1 original strand + 1 new strand
First step of DNA replication
First step of DNA replication
DNA double helix unwinds and uncoils
Second step of DNA replication
Second step of DNA replication
Enzyme breaks bonds between bases, strands separate
Adenine pairs with
Adenine pairs with
Thymine (T)
Guanine pairs with
Guanine pairs with
Cytosine (C)
Enzyme that joins nucleotides in DNA replication
Enzyme that joins nucleotides in DNA replication
DNA polymerase
Composition of each new DNA molecule
Composition of each new DNA molecule
Half original DNA, half new DNA
Template-directed in DNA replication means
Template-directed in DNA replication means
Original strand determines new strand sequence
DNA structure
DNA structure
Double helix