Replication, transcription, translation and isolation

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Can anybody explain these four things to me. They are all to do with DNA. I kind of understand it but I would appreciate some help.

Posted: 11-05-11 23:15 by Luke Eves

Transcription : when DNA is transcripted to mRNA

Translation: When mRNA is translated into amino acids by tRNA

Replication : when DNA is replicated to produce exact copies. New copies contain one strain of original DNA and one coded strand 

use revision guides/ textbook for better definitions 

Posted: 14-05-11 17:53 by hannah