Can You Identify the Bases That Will Be Added to This Parent Strand During Dna Replication?
DNA replication
Stage i
The DNA is unwound and unzipped. The helix construction is unwound. Special molecules break the weak hydrogen bonds between bases, which are holding the two strands together. This process occurs at several locations on a Dna molecule.
Stage 2
Deoxyribonucleic acid polymerase will add the free DNA nucleotides using complementary base pairing (A-T and C-G) to the three' end of the primer this will allow the new DNA strand to form. Adenine pairs with thymine, thymine with adenine, cytosine with guanine and guanine with cytosine. A primer is needed to first replication.
- Leading strand is synthesised continuously. DNA polymerase adds nucleotides to the deoxyribose (three') ended strand in a 5' to 3' direction.
- Lagging strand is synthesised in fragments. Nucleotides cannot be added to the phosphate (v') terminate because DNA polymerase tin only add together DNA nucleotides in a 5' to iii' direction. The lagging strand is therefore synthesised in fragments. The fragments are then sealed together past an enzyme called ligase .
Stage three
The two new strands twist to form a double helix. Each is identical to the original strand.
Source: https://www.bbc.co.uk/bitesize/guides/zrwhrj6/revision/2
0 Response to "Can You Identify the Bases That Will Be Added to This Parent Strand During Dna Replication?"
Post a Comment