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Introns And Exons
Beginning of essay
AP. Biology essay
The finding of the Introns and the exons was one of the most significant
discoveries in genetics in the past fifteen years. split genes were discovered
when lack of relation between DNA sequences were seen during. DNA- mRNA
hybridation. For all new mRNA, they must be transcribed ....
Middle of essay
....rimary transcript. An average mRNA consists of eight to ten introns, some
even contain sixteen introns. exons, like introns are also spread apart. Some
of their codons may be split by introns, so information for a single amino acid
could be some distance apart. Splicing takes place in the nucleus but also
could take place in the cytoplasm and the mitochondria. After the splicing of
the introns, the G-caps and the Poly A tails remain on the mRNA.
A single gene can code for multiple proteins .... |
| Number of words: 653 |
Approximate pages: 3 |
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