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A Gene Makes a Polypeptide 30 Amino Acids Long Containing

Question 46

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A gene makes a polypeptide 30 amino acids long containing an alternating sequence of phenylalanine and tyrosine.Assuming Phe = UUU and Tyr = UAU in mRNA,what are the sequences of nucleotides corresponding to this sequence in the following?
a)the mRNA strand (sense)
b)the non-template DNA strand (antisense or noncoding strand)
c)the template DNA strand (sense or coding stand)
d)the tRNA anticodon
e)Do you think that the sequence is the only possible one for these amino acids? Assume that the wobble position for each of these codons can be changed to the base cytosine.Answer questions (a)through (d)again with this new information.

Correct Answer:

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a)5′-UUU UAU UUU UAU UUU …etc.
b)5′-TTT ...

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