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DNA or Deoxyribonucleic acid is a double-stranded polymer of nucleotides wound into a double helix (a twisted ladder). It exists as a long, thin molecule of uniform diameter and its structure is highly repetitive. ... They hold the DNA molecule together by base pairing. The four kinds of nucleotide bases making up a DNA molecule differ in relative amounts from species to species. Each of the 4 bases also differs chemically from one another and the DNA is arranged in the two strands of the molecule so that they complement each other. ...
Cells contain two types of nucleic acids: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). ... This chemical difference makes DNA an unusually stable molecule (capable of carrying information for generations) and RNA an unstable molecule (usually destroyed in a matter of minutes or at most hours).
Approximate Word count = 615
Approximate Pages = 2.5
(250 words per page double spaced)
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