What keeps the two strands of DNA together? Explain.
2007-03-06 04:24:42 · 7 answers · asked by Maksim378 1 in Science & Mathematics ➔ Biology
Hydrogen bonds between purines and parymidine bases. There is either a purine or pyrimidine making up a unit of DNA, A binds to T, C binds to G, (this isn't important here) but hydrogen bonds between these bases bind to one another, it's not complicated, H-bonds or hydrogen bonds in the simple answser, not much to explain. Hydrogen bonds are formed by induced differences in electronegativity between a Hydrogen and Oxygen , or Hydrogen and Nitrogen atom.
2007-03-06 04:36:57 · answer #1 · answered by jason e 2 · 1⤊ 0⤋
DNA is a double Helix shape. What this suggests, is that there are 2 parallel strands in DNA. (I forget approximately what the chemical that composes those strands is. i think of this is phosphates, yet do not quote me on that.) Bridging the hollow between those 2 strands are 4 chemical components, Adenine, Thymine, Cytosine, and Guanine. in fact, image a convention music, and that's DNA unfolded. Now take that particular same image, and twist the parallel strands, on an analogous time as conserving the bridge between them. and there is your double helix. DNA is in this shape because of fact this is hassle-free for the physique to ascertain, and to make proteins. Sequences which at the instant are not used are spun tightly jointly, the place as sequences that are used are loose. image that practice music analogy back. Now twist till you are able to't twist to any extent further, those genes at the instant are not used and might't be examine. Twist it somewhat much less, and the gene could nicely be examine.
2016-10-17 09:58:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
two strands of DNA runs anti-parallel to each other.
they are kept together by hydrogen bonds.
due to this bonding the hellical structure of dna is formed.
2007-03-06 04:36:23 · answer #3 · answered by ashish 2 · 0⤊ 0⤋
The pairs of bases are bonded together.
2007-03-06 04:34:24 · answer #4 · answered by ecolink 7 · 0⤊ 0⤋
Covalent bonds, this question belongs in Chemistry. Covalent bonds keep the atoms bonded, I believe its Hydrogen bonds that keep it in its shape, been a few years since I've covered that lesson.
2007-03-06 05:03:58 · answer #5 · answered by Noota Oolah 6 · 0⤊ 2⤋
Hydrogen bonds link each polyneucleotide chain, creating complimentary base pairs:
A ----T
G----C
C----G
T----A
----- = hydrogen bond
2007-03-06 04:48:03 · answer #6 · answered by kangaroo 4 · 0⤊ 0⤋
the nucleotide bases: adenine, guanine, cytosine & thymine.
2007-03-06 04:32:26 · answer #7 · answered by tictactoe 2 · 1⤊ 0⤋