answer the following regarding DNA repair mechanisms What is \"direct repair\"? Give a couple of examples of...

90.2K

Verified Solution

Question

Biology

answer the following regarding DNA repairmechanisms
What is \"direct repair\"? Give a couple of examples of theenzymes involved. Which one requires light and what kind ofmutation does it repair? Which one repairs bases with alkyl groupsattached? Which base is involved?
What is â€œnucleotide-excision repairâ€? What kinds of mutationscan it repair? In prokaryotes, what four key proteins are involvedand how did they get their names? What two enzymes areinvolved?
What is â€œmismatch repairâ€? What does it do? This system correctsmistakes that have been missed by the normal correction system thatoccurs during DNA replication. Which enzyme normally corrects thesemistakes during replication?
What source of DNA is usually used in â€œhomologous recombinationrepairâ€ to fix the mutated strand of DNA? During which parts of thecell cycle can this type of repair occur? HRR can also occasionallyoccur at other times, but the homologous regions may not beidentical. Why might that be the case?
What happens during â€œnonhomolgous end joiningâ€? During whichpart of the process might some of the sequence be lost? When duringthe cell cycle can this type of repair occur?

Answer & Explanation Solved by verified expert

4.2 Ratings (889 Votes)

1 Direct repair when some lesion in DNA occurs sometime direct reversal of the damage is done is called direct repair It is one of the efficient way of repair but occurs very less frequently Some examples od enzymes involved in Direct reapir are CPD photolyase and O6alkylguanineDNA See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member