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The DNA double helix wraps around a protein scaffold, which condenses, and joins with another condensed protein scaffold, which are more commonly known as the sister chromatids. These chromatids are also called a DNA chromosome. However, one strand of DNA has all the genes on it (AKA the nitrogenous bases A, T, C, and G; A matches with T, C matches with G - base pairing rules. These bases are kept together by weak hydrogen bonds.)

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Q: How DNA molecule and chromosome structure alike?
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