
Essential Genetics 6th Edition by Daniel Hartl
Edition 6ISBN: 978-1449686482
Essential Genetics 6th Edition by Daniel Hartl
Edition 6ISBN: 978-1449686482 Exercise 13
A synthetic mRNA molecule consists of the repeating base sequence
This molecule is translated in vitro using components from cells but in the absence of living cells. The polypeptide chains result from translation of randomly broken mRNA molecules, so that translation can initiate in any of the three possible reading frames. Once translation of an mRNA begins, however, the original reading frame is preserved throughout. What polypeptide products are made from this RNA? (Note: In an in vitro translation system, an initial AUG is not necessary for translation; the ribosome can start at the 5' end of the mRNA no matter what initial codon is present.)

This molecule is translated in vitro using components from cells but in the absence of living cells. The polypeptide chains result from translation of randomly broken mRNA molecules, so that translation can initiate in any of the three possible reading frames. Once translation of an mRNA begins, however, the original reading frame is preserved throughout. What polypeptide products are made from this RNA? (Note: In an in vitro translation system, an initial AUG is not necessary for translation; the ribosome can start at the 5' end of the mRNA no matter what initial codon is present.)
Explanation
Observe the repeating sequence below.
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Essential Genetics 6th Edition by Daniel Hartl
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