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What are introns and exons?

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2013-11-22 00:51:37
2013-11-22 00:51:37
  • Intronsare intervening sequence of DNA; does NOT code for a protein.
  • Exons are expressed squence of DNA; codes for a protein.
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The difference between exons and introns is that exons are codes of proteins, while introns are not involved with the coding for proteins.

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Introns and exons both deal with the same area but do very different things. Exons code for proteins in the body and Introns do just the opposite. Introns also lay between exons and usually amount as useless DNA.

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No, bacteria do not contain introns or exons.

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Correct. The mRNA transcibed from the DNA in the nucleus has both exons and introns; the introns are taken out and the exons are left in. The mended exons exit the nucleus and the introns stay in the nucleus. Only the exons are translated at the ribosomes. (In Eukaryotic cells only)

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Exons are the DNA sequences that code for proteins. Introns are involved however they dont carry the genetic information that exons carry


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