the first step in homologous recombination is create what in one of the non sister chromatids? A. Digest back part of both strands B. single strand break C. double strand break D. have a free end invade the unbroken sister chromatid double helix
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- The DNA fragments show a portion of two nonsister chromatids before crossover. Suppose strand invasion occurs between regions A and B. The heteroduplex extends and forms the Holliday intermediate shown below right. Each dotted line represents one potential plane on which endonucleases could cut the intermediate. DEDE Left chromatid A Right chromatid b A B D Nonsister chromatids before crossover Holliday intermediate Match the chromatids that result from the different ways in which the Holliday intermediate can be resolved. Top chromatid B D Bottom chromatidDescribe step 5 of recombination: Branch migrationObserve the process of transduction in the image below. Cell 1 is represented by "A," Cell 2 is represented by "B," and Cell 1's DNA is represented by "a." The blue color represents the components of the bacteriophage. 6 Process of transduction. A B m с D 5 Which of the following correctly identifies a process that occurs during transduction? um No n During meiosis, crossing over occurs, which combines the genetic information of Cell A and Cell B. Genetic information is being transferred between bacterial cells using a pilus. Bacterial chromosomes are independently sorted into the bacteriophages. n Cell A's DNA was inserted into Cell B and incorporated into the genome of Cell B.
- Identify the structure the letter is indicating? a 88 b. C. d. Centromere Choose... Homologous Chromosomes Choose... Sister Chromatids Choose... Chromosome Choose...How is homologous recombination for DNA repair different from recombination in meiosis? Choose all correct answers. a. HR in DNA repair requires a double-strand break, but meiotic recombination does not. b. HR in DNA repair requires strand invasion, but meiotic recombination does not. c. HR in DNA repair results in identical chromosomes. Meiotic recombination results in changes to the DNA sequence of the "repaired" chromosomes. d. HR in DNA repair uses a newly synthesized identical chromosome as a template. Meiotic recombination uses a homologous chromosome as a template.A medical student is studying a liver biopsy taken from a regenerating liver following a partial hepatectomy. The student sees a dividing cell in which the chromosomes are aligned on a plate. Which of the following best describes the character of the chromosomes in the plate? A. 23 chromosomes with 2N DNA total and with each chromosome having one chromatid B. 23 chromosomes with 4N DNA total and with each chromosome having two chromatids C. 46 chromosomes with 2N DNA total and with each chromosome having one chromatid D. 46 chromosomes with 4N DNA total and each chromosome having two chromatids E. 92 chromosomes with 2N DNA total and with each chromosome having two chromatids
- Match each term with its description Chromatid Chromosome + Chromatin Homologous chromosomes Sister chromatids A. "Chromosome pairs inherited from each parent. Chromosomes pairs with same shape, same size and same genes. " B. One of the two identical copies making a chromosome C. Chromatids product of DNA duplication D. Single piece of chromatin tightly packed DNA with proteins E. Loosely-packed DNA with proteins22. With which protein(s) is a condensed eukaryotic chromosome NOT known to be associated? 1. core histones H2A, H2B, H3, and H4 2.histone H1 3.SMC proteins 4.topoisomerase I 5.topoisomerase IIIf you are experimenting on a haploid cell with DNA that is equal to 5. What is the amount of DNA during Prophase 2?
- 1.) Chromosome images are obtained from any cell type that has a nucleus. 2.) Chromosomes can be obtained from reticulocytes. a. Both are correct b. Both are incorrect c. Statement 1 is incorrect. Statement 2 is correct.In the picture below, what is the name of the labelled part of the chromosome? Please explain its function in full detailPut the following events concerning homologous recombination (the mechanism by which crossing over occurs) in order. 1 2 3 ين 4 Strand invasion and formation of the D-loop Resolution of holiday junctions Initiation of a double stranded break of one non-sister chromatid. Remove nucleotides from ends of DNA strands at the site of the double stranded DNA break.