1) RNA condons and amino acids: valine, proline, alanine
a. GCGCGUGUG b. GUGCCUGCG
c. GUUCCCACU d. GCUCUUGCU
To determine which RNA codon corresponds to each amino acid (valine, proline, and alanine), we can refer to the genetic code. The genetic code is a set of rules that determines the correspondence between RNA codons and the amino acids they specify.
Here is the information we need:
1. Valine: The RNA codons that specify valine are "GUU," "GUC," "GUA," and "GUG."
2. Proline: The RNA codons that specify proline are "CCU," "CCC," "CCA," and "CCG."
3. Alanine: The RNA codons that specify alanine are "GCU," "GCC," "GCA," and "GCG."
Now, let's analyze the provided RNA codons:
a. GCGCGUGUG:
This codon does not match any of the codons for valine, proline, or alanine.
b. GUGCCUGCG:
The codon "GUG" corresponds to valine, the codon "CCU" corresponds to proline, and the codon "GCG" corresponds to alanine. Therefore, this sequence represents valine, proline, and alanine.
c. GUUCCCACU:
The codon "GUU" corresponds to valine, the codon "CCC" corresponds to proline, and the codon "ACU" does not match any of the codons for alanine.
d. GCUCUUGCU:
The codon "GCU" corresponds to alanine, and none of the other codons match any of the codons for valine or proline.
In summary:
- Option b (GUGCCUGCG) represents valine (GUG), proline (CCU), and alanine (GCG).