dna replication Flashcards
1
Q
step 1
A
dna helicase breaks hydrogen bonds between base pairs within double helix causing it to unwind
2
Q
step 2
A
each separated parental dna strand acts as a template
free floating dna nucleotides in the nucleus are attracted to their complementary base pair on the template strand of dna
3
Q
step 3
A
adjacent nucleotides are bonded together by condensation reaction (forming phosphodiester bonds)
dna polymerase catalyses this joining
4
Q
step 4
A
2 sets of dna is formed
1 strand of parental dna and one newly synthesised strands
5
Q
complementary base pairs
A
adenine and thymine
cytosine and guanine
6
Q
why is dna replication done
A
to provide a copy for the new cell
7
Q
semi conservative dna replication
A
daughter dna is made
1 strand is from parental dna and one strand is newly synthesised
