description of the make-up of the ‘rungs’ and ‘sides’ of the ladder shape of DNA??

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description of the make-up of the ‘rungs’ and ‘sides’ of the ladder shape of DNA??

im really stuck and i was wondering if you could give me a hand... thanks :)

2007-04-24 19:59:24 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology

2 answers

sides are repeating units of sugar (deoxyribose) and a phospahte group whil;e the rungs are the various combinations of the 4 bases, adneine, guanine, cytosine and thymine.

2007-04-24 20:20:32 · answer #1 · answered by mareeclara 7 · 0⤊ 0⤋

Just to add some more info to the above: Each "rung" is composed of two bases. A bonds to T, and G bonds to C.
Between the A-T & G-C are chemically weak hydrogen
bonds.

2007-04-25 00:17:45 · answer #2 · answered by ursaitaliano70 7 · 0⤊ 0⤋