you add radioactive thymine to a culture of eukaryotic cells that are all currently in S phase. Predict the results from cells that divide twice after this addition. PLEASE ONLY PICK ONE ANSWER: Radioactive thymine would pair with nonradioactive guanine. All four bases of the DNA would be radioactive. DNA in all daughter cells would be radioactive. None of the daughter cells would be radioactive. One of the daughter cells, but not the other three, would have radioactive DNA.

you add radioactive thymine to a culture of eukaryotic cells that are all currently in S phase. Predict the results from cells that divide twice after this addition. PLEASE ONLY PICK ONE ANSWER: Radioactive thymine would pair with nonradioactive guanine. All four bases of the DNA would be radioactive. DNA in all daughter cells would be radioactive. None of the daughter cells would be radioactive. One of the daughter cells, but not the other three, would have radioactive DNA.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 1ITD: Biologists have long been interested in the effects of radiation on cells. In one experiment,...

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ou add radioactive thymine to a culture of eukaryotic cells that are all currently in S phase. Predict the results from cells that divide twice after this addition. Group of answer choices Radioactive thymine would pair with nonradioactive guanine. All four bases of the DNA would be radioactive. DNA in all daughter cells would be radioactive. None of the daughter cells would be radioactive. One of the daughter cells, but not the other three, would have radioactive DNA.
Hypothetically, a cell has DNA that weighs 10 picograms. This cell goes through S phase and is about to undergo mitosis. How much does the DNA of this cell weight now? How much would the DNA of the two cells produced at the end of mitosis weigh? Explain your reasoning.
Assume that you are growing mammalian cells in culture. You are able to synchronize the culture, meaning all of the cells undergo each stage of the cell cycle at the same time. The graph shows the amount of DNA in the nuclei of cells during cycle 1 and cycle 2 of cell growth II III IV First cycle Second cycle At which stage(s) would you NOT find condensed chromosomes? Select all that apply Amount of DNA in nucleus
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A line of mouse cells is grown for many generations in a medium with 15N. Cells in G1 are then switched to a new medium that contains 14N. Draw a pair of homologous chromosomes from these cells at the following stages, showing the two strands of DNA molecules found in the chromosomes. Use different colors to represent strands with 14N and 15N. Q. Cells in anaphase of mitosis, after switching to medium with 14N
The microscope image above shows the human chromosomes from a white blood cell. To create the image, researchers put cells in culture under conditions that encourage the cells to divide. They bathed the cells in a hypotonic (low salt) solution, which caused the cells to swell until their plasma membrane burst open. They "squashed" the chromosomes to spread them out, and stained them with a dye to make them visible under the microscope. Human chromosomes are numbered from longest (1) to shortest (22) plus the sex chromosomes X and Y. In the image chromosome 1 is about 7 micrometers. Answer the following questions. 1) What word(s) in the description above indicates that the chromosomes are not from a cell undergoing meiosis? 2) Based on the size, shape and appearance of the chromosomes in the image, in what cell cycle stage was the cell that the chromosomes came from? How can you tell? 3) Does the image suggest that centromere sequences are always located in the middle of a…
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8) You perform flow cytometry on a population of cells treated with a mutagen to identify new factors required for cell cycle progression. You isolate two new mutants that display a change in the rate of the cell cycle. You measure DNA content with flow cytometry from a control cell population as well as from these two mutants. The results from this experiment are shown below. Control Mutant 1 Mutant 2 1 Relative amount of DNA per cell Use these data to answer the following questions. 1) If you measured levels of M-cyclin protein from these different populations, which would have the HIGHEST. a. Control b. Mutant 1 c. Mutant 2 2) After genome sequencing, you identify a loss-of-function mutation in Cdc20 in one of these cell populations. Based on these data, which population would you expect to have this mutation? a. Mutant 1 b. Mutant 2 3) If DNA damage is sensed during replication and cell cycle progression is stopped, which of the graphs would you expect to observe? a. Control b.…
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You are studying a new fungus, G. lucasus, and are interested the molecules that control the cell cycle of this new organism. You make some mutant cells and find an intriguing mutant that has two mutations - one in the force gene and one in the darkside gene. a. You perform propidium-iodide cell cycle analysis by flow cytometry on wild-type and the double mutant cells and your results are below. During what stage(s) of the cell cycle are the double mutant cells arresting their growth? Please briefly explain your answer. # of cells Wild-Type Cells In 180 kDa 110 kDa 80 kDa b. In studying the gene products of the force and darkside genes, you determine that the force gene produces a polypeptide of 80 kDa, and the darkside gene produces a polypeptide of 42 kDa. You collect lysates from wild-type cells in G₁, S, or G₂/M phases of the cell cycle and perform a Western blot (immunoblot) with either an antibody against force or an antibody against darkside ... only you forget to label your…