The shape of a DNA molecule is most like O A) the letter X. O B) a diamond ring. C) a set of railroad tracks. O D) a twisted ladder. E) a gold necklace.
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- Which type of DNA is found in bacteria?Why do you think all organisms use nucleic acids for encoding genetic information? Why not use proteins or carbohydrates? What advantages might DNA have as the source of genetic information?Which type of chemical bond maintains the pairing of each chain in the DNA molecule?