In Biology. The sides of the DNA ladder is composed of sugar and phosphate. 4  bases that make up the rungs of the DNA ladder are A, T, G, and C.  The shape of the DNA is a double helix â¦ or twisted ladder.Answered. In Genetics.hat are the sides of the DNA ladder composed of? The sides of the DNA ladder is composed of sugar and phosphate. 4  bases that make up the rungs of the DNA ladder are A, T, G, and C.  The shape of the DNA is a double helix â¦ or twisted ladder.
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Source(s): I have been a dancer for over 20 years and a dance teacher for over 10 years. I have also performed on and coached competitive dance teams for 10 years. What you've listed - jazz, hiphop - are dance styles. Open category means proficiency level for a particular style, at least in ballroom dance competitions. Open category is the highest level. Open means you are not restricted to syllabus figures, you can dance whatever you like, as long as it fits in with the style and looks good. Source(s): Ballroom dancer.