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Lecture Topic 15
Central Dogma
10
Biology
Undergraduate 1
12/08/2009

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Term
Gene expression
Definition
transcription and translation
Term
Transcription
Definition
produces mRNA strand complementary to one of the DNA strands
Term
Translation
Definition
ribsomes "read" nucleotide sequence in mRNA and synthesize a polypeptide with a specific sequence of amino acids
Term
Codon
Definition
every 3 nucleotides (read in 5' to 3' direction)
Term
How many codons are there in all?
Definition
64 Codons
Term
How many codons code for amino acids?
Definition
61
Term
hat are the 3 stop codons?
Definition
UAA UAG UGA
Term
Code of Methionine
Definition
AUG (start codon)
Term
Two examples of transgenic organisms
Definition
*Tobacco plant expressing a firefly gene
*pig expressing a jellyfish gene
Term
What is Beadle and Tatums hypothesis?
Definition
one gene-one polypeptide= genes function by coding for several polypeptide subunits
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