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deoxyribonucleic acid


double helix / twisted ladder

shape of DNA

adenine, thymines, guanine, cytosine

nitrogen bases


pairs only with adenine


pairs only with guanine


number of chromosomes that most humans have


the area on the DNA strand that codes for a specific trait


uncondensed DNA


condensed DNA

deoxyribose and phosphates

two molecules that make up the sides of the DNA ladder

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