Answered: If you were given a sample of…

If you were given a sample of chromosomal DNA and asked todetermine if it is bacterial or eukaryotic, what experiment wouldyou perform, and what would be your expected results?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter15: Genomes And Genomics

Section: Chapter Questions

Problem 6QP: Which of the following best describes the process of DNA sequencing? a. DNA is separated on a gel,...

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If you were given a sample of chromosomal DNA and asked to
determine if it is bacterial or eukaryotic, what experiment would
you perform, and what would be your expected results?

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As the cost of DNA sequencingdecreases and the amount ofsequence data accumulates, howare we going to keep track of andmeaningfully analyze this vast amountof information? What new questionswill this information allow us to answer?
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Let’s suppose you have recently identified an organism that wasscraped from an asteroid that hit the earth. (Fortunately, no onewas injured.) When you analyze this organism, you discover thatits DNA is a triple helix, composed of six different nucleotides: A,T, G, C, X, and Y. You analyze the composition of the DNA andfind the following amounts of the six bases: A = 24%, T = 23%,G = 11%, C = 12%, X = 21%, Y = 9%. What rules would you proposethat govern triplex-DNA formation in this organism? Note: There is more than one possibility.
If we are given this segment of DNA: TTGGHTGUTGG HHUUTHUGHUU Let’s suppose this DNA was treated with nitrous acid. The nitrous acid was then removed, and the DNA replicated for two generations. What would be the sequences of the DNA products after the DNA had replicated two times? (note Hypoxanthine pairs with cytosine) and so there would be four sets?
Neema wants to determine whether or not the nucleus of a cell differs in the chemical compounds they contain or not from species to species. She is planning on working with the nucleus of a human and the nucleus of a mouse. She has removed all of the DNA from each nucleus, then has selected and isolated one DNA fragment from each species. What results can Neema expect if she takes the human DNA fragment and inserts it into the mouse nucleus and then inserts the mouse DNA fragment into the human nucleus? Use your knowledge of DNA replication to answer.
What would be the conseyof a cell being unable to replicate its DNA?
Julia and Vinay's teacher was walking around the laboratory during the experiment asking students questions to deepen their thinking about their results. She told Julia and Vinay that one of the cell samples contains bacteria. Then she asked them, "How would you describe the process of genetic information being passed from parent to offspring in organisms like bacteria?"
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Imagine you have three test tubes containing identicalsolutions of purified, double-stranded human DNA.You expose the DNA in tube 1 to an agent that breaksthe sugar-phosphate (phosphodiester) bonds. Youexpose the DNA in tube 2 to an agent that breaks thebonds that attach the bases to the sugars. You exposethe DNA in tube 3 to an agent that breaks the hydrogen bonds. After treatment, how would the structuresof the molecules in the three tubes differ?
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