Transcription and Translation. GENE EXPRESSION - How the genes are expressed is a function of the protein produced. DNA (gene). Ribosome. tRNA & rRNA. Protein. m RNA. Trait (expression). There are two processes that make this happen…. Transcription. Translation.
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Transcription and Translation
tRNA & rRNA
mRNA strand is usedat the ribosome to help join amino acids to form a protein.
Let’s watch a video of transcription…
These stages are catalyzed by the enzyme RNA polymerase
A-U-G – G-G-C – A-U-C – G-A-A – U-G-A
A-U-G – G-U-A – G-G-G – U-U-U – U-G-A
That’s right….a nucleotide
Amino Acids….good job!
3X….Wow! You guys are on a roll!
22…you all are Math whizzes
700…Ah! This one is tricky!
43 = 4 x 4 x 4 = 64
different codons (using A, G, C and U in triplets)
Methionine and Trytophan
more than one nucleotide triplet codes for each amino acid.
valine, alanine, isoleucine, threonine, and many more
They are very similar and usually only the last nitrogen base is different.
ATT, ATC, ACT
Let’s Watch a video on Translation…