DNA

• DNA is a large molecule that can be abstractly defined as a sequence of symbols from the set, A, C, G, T, called nucleotides.

• The human genome has about 3 billion nucleotides.

  • A huge percentage of the genome is shared by all humans.
  • Some of the variation makes us different.
  • Some of the variation is inconsequential.
  • The human genome is still being discovered.

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