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Determine possible amino acid sequences for the mRNA sequence shown below.?
5\'–AUCGGACGAAAGCGCU–3\'
Select all possible amino acid sequences. There will be more than one answer.
a. Ser-Arg-Lys-Gln-Ala
b. Arg-Lys-Arg-Gly-Ile
c. Ile-Gly-Arg-Lys-Arg
d. Arg-Thr-Lys-Ala
e. Ser-Asp-Glu-Ser-Ala
I know that there are three answers but which three I am not sure plzz help!
1 Answer
- steve_geo1Lv 77 years ago
To work out this problem, it is best to have the circular diagram of the genetic code, published in American Scientist, 97, 378.
AUC = Ile
GGA = Gly
CGA = Arg
AAG = Lys
CGC = Arg (So Answer c.)
You have noticed that after all this, there is an extra "U" at the end of the code. This means that the code is also to be read backward, three-by-three.
UCG = Ser
GAC = Asp
GAA = (this could be either Glu or Gly) (Answer e; there is no answer with Gly in this position.)
AGC = Ser
GCU = Ala
And of course there is the extraneous A at the beginning of this sequence.
