View Full Version : Nucleotides of DNA - need help
LIGHTNINGLORD67
02-23-2012, 08:09 PM
I know that G pairs with C and A with T, but I know that half of those nucleotides are longer than the others, which is why it formed a double helix. The problem is i don't know which ones are longer. A and G? Or T and C?
google search did not help for me
Gluttony
02-23-2012, 08:20 PM
Longer in terms of what? I'm a visual learner:
http://upload.wikimedia.org/wikipedia/commons/2/21/GC_base_pair_jypx3.png
http://upload.wikimedia.org/wikipedia/commons/6/67/AT_base_pair_jypx3.png
I know that adenine and guanine are 'larger' and that Wiki backs me up: The larger nucleobases, adenine and guanine, are members of a class of double-ringed chemical structures called purines; the smaller nucleobases, cytosine and thymine (and uracil), are members of a class of single-ringed chemical structures called pyrimidines (http://en.wikipedia.org/wiki/Base_pair).
Maybe ask the question that you're tring to answer directly.
LIGHTNINGLORD67
02-23-2012, 08:37 PM
OOOohhh so it IS A and G. yeah I meant larger lol :P Thanks soooooo so so so so much