Haploid yeast cells that preferentially repair double-strand breaks by homologous recombination (rather than by non-homologous end...
z Instructions Question 1 (Q039) In addition to the repair of DNA double-strand breaks, homologous recombination is a mechanism fe generating genetic diversity by swapping segments of parental chromosomes. During which process does swapping occur? DNA replication ODNA repair O meiosis transposition No new data to save. Last checked at 8:05am
Which of the following is NOT a function of homologous recombination? Repair of DNA double strand breaks Repairing bulky DNA damage Pairing of homologous chromosomes in meiosis Rescue of collapsed replication forks
Ionizing radiation and oxidative damage can cause DNA double-strand breaks. A. True. B False Nucleotide Excision Repair involves recognition of distortions in the DNA double helix rather than specific base changes. A. True. B False Homologous recombination does not occur in prokaryotic cells. A. True. B False Many chemotherapeutic agents are paradoxically DNA damaging agents A. True. B False Meiot.c recombination starts with, double-strand break caused by errors In DNA replication A. True. B False ONA replication origins are typically...
The process of homologous recombination is a means to repair double-strand breaks, the most lethal form of DNA damage. Arrange the sequence of events in the proper order: 1. ATR recognizes single-stranded ends, binds to them, and initiates signaling. 2. RAD51 complexes with ssDNA and searches for homologous sequences. 3. MRN nuclease trims the 5' ends, leaving ss-3' ends that are coated with replication protein A. 4. ATM activates a nuclease in MRN and signals downstream effectors. 5. RAD51-ssDNA complex...
Sort the following steps for repairing double-strand breaks by homologous recombination a) Ligation b) DNA synthesis using undamaged DNA as template c) DNA synthesis using original DNA as template d) Release of the invading strand e) Strand invasion f) Nuclease digestion (resection)
Unit 3 Study Resource Meiosis • Process by which diploid cells create haploid cells NOT part of the cell cycle > only some cells ever undergo meiosis During meiosis I, homologous chromosomes line up to allow them to be separated into two new cells o They can become "tangled" during this phase, which leads to crossing-over (rearranging the alleles) O Result of meiosis I is two non-identical haploid cells Meiosis Il looks very similar to mitosis, in that sister chromatids...