which rna basr sequence wod produce the amino acid sequence : Valine Proline Alinine
a.GCGCGUUG
B. GUGCCUGCG
C. GUUCCCACU
D. GCUCUUGCU
Gugccugcg
D. GCUCUUGCU
To determine which RNA base sequence would produce the amino acid sequence Valine-Proline-Alanine, we need to refer to the genetic code table. The genetic code table shows the correspondence between RNA codons and the amino acids they encode.
Here's a simplified version of the genetic code table:
U C A G
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U | Phe | Ser | Tyr | Cys |
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C | Leu | Pro | His | Arg |
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A | lle | Thr | Asn | Lys |
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G | Met | Gln | Asp | Glu |
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Each set of three RNA bases is called a codon, and it represents a specific amino acid. To find the RNA sequence that produces the amino acid sequence Valine-Proline-Alanine, we need to look for the codons that code for each of these amino acids.
Valine (Val) is encoded by the codon "GUC" or "GUU".
Proline (Pro) is encoded by the codon "CCU" or "CCC".
Alanine (Ala) is encoded by the codon "GCU" or "GCC".
Based on this information, let's evaluate the given options:
A. GCGCGUUG: This sequence does not include the required codons for Valine, Proline, or Alanine.
B. GUGCCUGCG: This sequence includes the codons "GUG" (Valine), "CCU" (Proline), and "GCG" (Alanine). Therefore, option B is a potential match.
C. GUUCCCACU: This sequence includes the codons "GUU" (Valine), "CCC" (Proline), and "ACU" (Threonine), not Alanine. Therefore, option C is not a match.
D. GCUCUUGCU: This sequence includes the codons "GCU" (Alanine), "CUC" (Leucine), and "UGC" (Cysteine), but does not include the codon for Proline or Valine. Therefore, option D is not a match.
Based on the evaluation, the correct answer is option B, GUGCCUGCG.