9) strand invasion requires a 3' single stranded DNA molecule.
10) The form of genetic recombination that allows movement of genetic element from one DNA site to another is termed transposition.
QUESTION 9 Strand invasion requires a__, O A. 5', single-stranded B. 5', double-stranded ° C. 3, single-stranded O D.3', double-stranded DNA molecule. QUESTION 10 The form of genetic reco...
In a long double-stranded DNA molecule containing the genetic information for many genes, the template strand for one gene may be the nontemplate strand for another gene. true or false
Question 16 0.5 pts Identify the correct sequence of events proposed by the double-stranded break model of homologous recombination repair mechanisms: 1. Strand invasion and D loop formation. II. DNA gap repair synthesis. III. Generation of single stranded DNA segments. IV. Resolution. I, III, II, IV O III, I, II, IV III, II, I, IV IV, III, 1, 11 None of the above
The partial sequence of one strand of a double stranded DNA molecule is: 5’ ---GACGAAGTGCTGCAGAAAGTCCGCGTTATAGGCATGAATTCCTGAGG--- 3’ Write the sequence of both strands of the DNA fragment when this DNA is cleaved with both EcoRI and PstI. The top of your duplex DNA fragment should be derived from the standard sequence given above.
For the following single-stranded DNA molecule: 3’ – G T A C A A G T C A – 5’ 1. Write the complementary strand, being sure to label polarity. (2 pts) 2. What is the GC content for the resulting double-stranded DNA molecule? (2 pts)
5. About double strand DNA repair, it is correct to say that choose the most appropriate answer): (a) It requires one intact strand as a template for error correction. (b) Mismatches in the DNA are usually corrected via double strand DNA repair mechanisms. (c) Homologous recombination usually results in DNA repair with no loss of nucleotide at repair site. (d) Non-homologous end-joining usually results in DNA repair with no loss of nucleotide at repair site. 6. A eukaryote gene has two introns and three exons....
1. Homologous recombination can happen between non-identical DNA sequences. T/F? 2. Homologous recombination can happen in_______ a) meiosis b) mitosis c) both 3. Homologous recombination in meiosis has the main purpose of_____ a) DNA repair b) Creating new chromosomes c) Sealing double-stranded breaks 4. Strand invasion usually happens without enzymatic assistance. T/F? 5. When replication fork runs into a nick, it results in a_______ a) single-stranded break b) double-stranded break 6. The invading end is usually a _______ a) 3'...
Consider the double-stranded DNA sequence of a gene below: Strand 1 5'- AATCGTATGCGAAGCCCTTAACT-3' Strand 2. С стената. 3. TTAGCATACGCTTCGGGAATTGA-5' The number of amino acids in the corresponding peptide is: OA.O B.1 OC3 0.4 O E.5 Consider the following double-stranded region of a gene: Strand 17 5'- AATCGTATGCGAAGCCCTTAACT-3 Strand 2A 3'-TTAG CATACGCTTCGGGAATTGA-5 The number of mRNA codons in the corresponding transcriptis O A1 OB.4 OC.5 OD.6 E. Cannot be determined
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...
1. Which of the following statements is FALSE? Helicase activity 'unwinds DNA making the double-stranded molecule into single strands. b. The leading strand of DNA is started by an RNA primer The lagging strand of DNA is synthesized as "Okazaki fragments", cach with its own RNA primer. DNA replication proceeds in both directions around the bacterial chromosome. DNA polymerase synthesives new DNA in one direction (3 to 5) only. 2. Which of the following would be found in eukaryotes? a....
QUESTION 3 The form of replication used by DNA is conservative. semiconservative. O dispersion. cumulo-nimbus QUESTION 4 The short fragments of the lagging strand are called Okazaki fragments. polymerase leading segments radioactivity molecules. QUESTION 5 0.5 points Which of the following are symbols for the four bases that are part of the make up of a DNA molecule? O A BT, G O CGAH O ATG,C O A U,G,C QUESTION 6 0.5 point In DNA replication, helicase is a protein...