which part of the dna ladder is made of sugars and phosphates
The sides of the DNA ladder are long chains of sugars and phosphates (fahs-fates). The rungs of the ladder are four chemical bases: adenine (add-n-een), guanine (gwa-neen), cytosine (sigh-tuh-seen) and thymine (thigh-meen). Adenine (A) always pairs with thymine (T) and guanine (G) always pairs with cytosine (C).he sides of the DNA ladder are long chains of sugars and phosphates (fahs-fates). The rungs of the ladder are four chemical bases: adenine (add-n-een), guanine (gwa-neen), cytosine (sigh-tuh-seen) and thymine (thigh-meen). Adenine (A) always pairs with thymine (T) and guanine (G) always pairs with cytosine (C).