Question

Why does DNA have to be stable and what mechanisms ensure the DNA's stability?

Answer 1

as our dna is a double strand structure,its more likely too break if not stabilized....I guess, Dna packing around Histone proteins give the dna stability...as DNA is negetively charged(due to the presence of phosphate group),and Histone protein is positively charged....it electically stabilizes dna...also,it packs the dna so well,that physically it gets stabilized also...

Answer 2

http://www.google.com/imgres?hl=en&sa=X&rlz=1C1CHMO_en-gbBD492BD492&biw=1152&bih=751&tbm=isch&prmd=imvns&tbnid=AXtxXUJ9t5qEwM:&imgrefurl=http://www.ntu.edu.sg/home/LarsNor/research.html&imgurl=http://www.ntu.edu.sg/home/LarsNor/image/image004.jpg&w=334&h=241&ei=gtE6UNOzB8vrrQf4iYHoDA&zoom=1&iact=hc&vpx=522&vpy=286&dur=1101&hovh=191&hovw=264&tx=173&ty=92&sig=112954426474802025314&page=1&tbnh=127&tbnw=176&start=0&ndsp=26&ved=1t:429,r:9,s:0,i:103

Answer 3

or this one...this is a better pic,i guess..

http://www.google.com/imgres?hl=en&sa=X&rlz=1C1CHMO_en-gbBD492BD492&biw=1152&bih=751&tbm=isch&prmd=imvns&tbnid=GEjXyxNysr1vTM:&imgrefurl=http://www.unc.edu/depts/marzluff/histone.html&imgurl=http://www.unc.edu/depts/marzluff/histone.jpg&w=417&h=986&ei=gtE6UNOzB8vrrQf4iYHoDA&zoom=1&iact=hc&vpx=431&vpy=279&dur=1697&hovh=345&hovw=146&tx=96&ty=249&sig=112954426474802025314&page=1&tbnh=137&tbnw=58&start=0&ndsp=26&ved=1t:429,r:21,s:0,i:141

Answer 4

Thank you so much. I found out that I'm entered for an extra biology exam and we didn't cover this part in class

Answer 5

no problemo!

Answer 6

Hello, just want to add to this answer :)

Think about this - why must our DNA be very stable? Tell me what you know about its function (after all, it is the basis of our cells)?

One way that it remains stable is that it is in replicate - that is, there are two complementing strands.

Answer 7

@Zoot

Answer 8

http://www.newton.dep.anl.gov/askasci/mole00/mole00792.htm

Answer 9

i think d dna double helix is stabilized primarily by two forces...the hydrogen bonds between the nucleotides and the base stacking interactions among the aromatic nucelobases