<p>Haha okay, now i don’t know. I know i keep pestering about this, but @canbambi, do you remember if that orientation was the one that matched 3 answer choices?</p>
<p>@kim</p>
<p>one of the choices mentioned an unequal sharing of electrons, so polar
another one mentioned water being covalent
another one or two mentioned hydrogen bonding i think</p>
<p>It was either one of the two diagram…I forgot how many times the DNA stand twisted… >.<. But i do know that the correct one was B.</p>
<p>The orientation I just posted? I think it was either B or C, but I’m not sure.
If you’re talking about the one hkim posted I do not know.</p>
<p>Well. If there was an even number of twist then hKiim’s diagram was correct. But if there was an odd nubmer of twist then your’s is correct. However, I’m kinda certain the answer was B, even thought I forgot how many twist it had specifically,</p>
<p>I chose B for the DNA.</p>
<p>And thanks twp. Sorry, but do you remember the letter choice for that? I have a brain freeze right now so I have no idea what I chose for that.</p>
<p>There was an odd number of twists. I followed it specifically. Also there was something else wrong with hkim’s orientation (like the base pairs weren’t matched up properly or there was uracil or something) but I can’t remember what it was.</p>
<p>Unequal sharing of electrons was answer choice B</p>
<p>@kim</p>
<p>I have a feeling it was B, but I’m not completely sure.</p>
<p>I think there was uracil for answer choices A and E, and for C and D, the diagram had the one that canbambi drew, so I chose B.</p>
<p>I think canbambi may be right, i traced the winding DNa and i think I got C</p>
<p>oh yeah D was the one that didn’t have uracil but had mismatched pairs</p>
<p>Well I’m not sure which answer choice (B or C) corresponds with which orientation, but I am pretty sure the answer I picked is the correct one. The one below had G matched with T or something like that.</p>
<p>HO S**T really? So it’s C? Wow. What a terrible mistake I made.</p>
<p>oh whoa, i just realized something. if the DNA diagrams were just straight out two sides of DNA lined up (they weren’t winding helixes), then one strand would have to be 5 at one end and 3 at the other, no matter how many base pairs in between. If the DNA was winding, it’d have a chance at having a
5 ----- 5
3 ----- 3
orientation, but since the diagram was of strands only, no winding, then each strand would have to have a 5 end and a 3 end. I think
5 ----- 3
3 ----- 5
is right…crap</p>
<p>No… they were winding helices and you can’t match a 5’ end with a 5’ end.</p>
<p>But aren’t DNAs antiparallel, meaning that if 5’ is on the top left, then 3’ has to be on the bottom left?</p>
<p>If you mean winded up as in twisted , then they’re were winded up.</p>
<p>And if it was winded up, then the correct orientation depends on the amount of twists, which I forgot, but Canbamb said it was an odd number</p>
<p>are you sure they were winding? haha i hope so…</p>
<p>I was saying if it was winding, the ends could come out to where the 5 and 5 were at the same level horizontally</p>
<p>Yeah it was for sure twisted up and the answer I chose had both 5’ ends at the same horizontal level</p>