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    • #16983
      2468
      Participant

      Hey,
      I need help with this question…does anyone have any idea?
      I’ve uploaded the results as a attachment.

      Question: Consider the six lanes from the left (where the most left lane is lane 1 and lane 4 and 5 are empty). Match the correct explanation for the bands visible in the different lanes.

      Explanations:
      1. In this lane the DNA has been almost completely digested because the nucleosome had been extracted before nuclease treatment

      2. The high molecular weight bands in this lane represent DNA protected from the nuclease

      3. The strong low molecular band in this lane represents the DNA that stretches between nucleosomes

      4. High molecular weight bands in this lane represent the undigested DNA

      5. The bands in this lane represent the molecular weight standards

      6. The band at approximately 200 bp in this lane represents the DNA that is wrapped around the nucleosomes

      7. The lack of bands in this lane (except for a very faint band at at 200bp) demonstrates that EDTA has effectively inhibited the nuclease enzyme

      Answers to match the explanations: Lane 1, Lane 2, Lane 3, Lane 6, Wrong Interpretation.

      Thank you 🙂


      Attachments:

    • #112834
      JackBean
      Participant

      So what’s your idea?

    • #112842
      2468
      Participant
      quote JackBean:

      So what’s your idea?

      Well so far i got : explanation 2 = lane 1
      explanation 3 = lane 3
      explanation 4 = lane 2
      explanation 7 = lane 1

      Not to sure about the rest…so need help with them! 🙂

    • #112843
      JackBean
      Participant

      how can you have two explanations for one lane?

      Do you really think that the lane 3 has such strong band?

    • #112844
      2468
      Participant
      quote JackBean:

      how can you have two explanations for one lane?

      Do you really think that the lane 3 has such strong band?

      Just to help you count…Theres 7 explanations and 5 options. Some answers MIGHT be a repeat… 🙂

      Well, I wouldnt be asking for help if I knew the answers myself if that isnt obvious… :/

    • #112848
      JackBean
      Participant

      OR some of them may not be used 😉 🙄

      Don’t you think that explanations 2 and 7 are contradictory (high-molecular bands vs. lack of bands)?

    • #112849
      Cat
      Participant

      I am not completely sure about lanes 1 and 2, but 100% sure about 3 and 6.

      Lane 2 (smear starting in the middle of the gel ending with strong band of low molecular weight)= 1. In this lane the DNA has been almost completely digested because the nucleosome had been extracted before nuclease treatment

      Lane 1 (smear starting at the well and ending in the middle of the gel means undigested DNA)= 4. High molecular weight bands in this lane represent the undigested DNA

      Lane 6 = 5. The bands in this lane represent the molecular weight standards
      Lane 3 = 7. The lack of bands in this lane (except for a very faint band at at 200bp) demonstrates that EDTA has effectively inhibited the nuclease enzyme

    • #112850
      2468
      Participant
      quote Cat:

      I am not completely sure about lanes 1 and 2, but 100% sure about 3 and 6.

      Lane 2 (smear starting in the middle of the gel ending with strong band of low molecular weight)= 1. In this lane the DNA has been almost completely digested because the nucleosome had been extracted before nuclease treatment

      Lane 1 (smear starting at the well and ending in the middle of the gel means undigested DNA)= 4. High molecular weight bands in this lane represent the undigested DNA

      Lane 6 = 5. The bands in this lane represent the molecular weight standards
      Lane 3 = 7. The lack of bands in this lane (except for a very faint band at at 200bp) demonstrates that EDTA has effectively inhibited the nuclease enzyme

      Thank you! 🙂

    • #112851
      JackBean
      Participant
      quote Cat:

      Lane 6 = 5. The bands in this lane represent the molecular weight standards

      Really? You see there distinct bands? Something in regular distances?

    • #112867
      Cat
      Participant
      quote JackBean:

      quote Cat:

      Lane 6 = 5. The bands in this lane represent the molecular weight standards

      Really? You see there distinct bands? Something in regular distances?

      This is a bad picture of a bad gel as far as I can tell. And yes, I do see familiar pattern. Here is another example of poor gel:

      http://aem.asm.org/content/66/4/1423/F1.expansion.html

    • #112904
      2468
      Participant

      Hey,
      Can someone please confirm my answers before I submit it….correct me if i am wrong instead of beating around the bush! 😀

      explantion 1= lane 2
      2= wrong interpretation
      3= lane 3
      4= lane 1
      5= lane 6
      6= wrong interpretation
      7= lane 3

      Which of the following protocols modifications could remove the high molecular weight bands?
      1. Increase the EDTA concentration

      2. Expose the cells to the detergent for longer time

      3. Increase the concentration of the nuclease

      4. Decrease the concentration of the nuclease

      5. Increase the incubation time with the nuclease.

      6. Increase the number of cells used

      I’ve put down 1,2,3,5

      Thank u!

    • #116166
      dinnuparus
      Participant

      do on more cells may be effect some infection controll the infection occurring time. Androdumpper APK finally said Androdumpper.com/ Cinema Box for iPad

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