Postrep repair

Question 1

Thymine dimer in template strand blocks what

Answer 1

DNA polymerase III progress ie replication

Question 2

DNA polymerase III does what first

Answer 2

restarts DNA synthesis past the dimer, leaving a gap in the nascent strand

Question 3

what protein is needed

Answer 3

RecA

Question 4

RecA does what

Answer 4

recombinaton

Question 5

RecA binds to what

Answer 5

to the single strand DNA at the gap and mediates base pairing with the homologous segment of the sister double helix to fill the gap

Question 6

DNA polymerase then does what and ligase

Answer 6

Polymerase fills the gap in the sister double helic and DNA ligase seals the nick