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iwaldron's picture

March 2011 revision

The main change in this revision is the incorporation of a slot in the nucleus to insert the DNA molecule and a slot in the ribosome to insert the mRNA molecule. Once the DNA or mRNA molecule is inserted, most of the nucleotides are not visible, so students are not tempted to line up all the matching nucleotides or tRNA anti-codons at once. Instead, students add only one nucleotide at a time during transcription and only one amino acid at a time during translation to model the actual biological processes of transcription and translation.


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