DNA Replication Flashcards
mutations
Can be caused by many different factors, such as: environmental conditions viruses inherited diseases exposure to radiation mistake in the DNA replication process.
-Most mutations have no effect on the
organism
-They are vital to the process of evolution
-Most mutations come about in somatic cells (tissue cells) and cannot be passed on
-Polypoide when an organism has more than one set on its chromosome.
replication enzymes and what they do T H B P DP3 O DP1 L
Topoismerase- relieves tension in the DNA
Helicase- seperates DNA strands (takes apart hydrogen bonds)
Binding Protein- prevent seperated DNA strands from rejoining
Primase- adds short primer to template strand
DNA polymerase 3- proofread the new DNA strand as it is made
Okazaki Fragments- complementary base pairs added in chunks
DNA polymerase 1- removes rna primer and inserts correct bases
Ligase- nicks or spaces in the DNA backbone are sealed up by
banana lab
soap: it breaks apart the cellular and nuclear membrane and it releases the DNA
salt: its helps bring the DNA strands together
chilled alcohol: the alcohol is used t precipitate the DNA
sequence & order of DNA replication
- Topoismerase
- Helicase
- Binding Protein
- Primase
- DNA Poly 3
- Okazaki Fragements
- DNA poly 1
- Ligase
why we do replication?
to make new cells
why won’t the body put additional DNA back into an old cell?
The cell is now gone and no longer has any DNA, if you don’t have DNA that you can replace then you can’t make more.
structure and orientation
anti-parallel