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Sagot :
Sure, Carlos! Let's work through this step-by-step to clarify your understanding and identify the mistakes in your answer.
### Part 1: Transcribing DNA to mRNA
Original DNA sequence: GAC CAT GTC
To transcribe DNA to mRNA, we replace each DNA base with its complementary RNA base:
- A (Adenine) -> U (Uracil)
- T (Thymine) -> A (Adenine)
- C (Cytosine) -> G (Guanine)
- G (Guanine) -> C (Cytosine)
Let's transcribe the given DNA sequence into mRNA:
- G -> C
- A -> U
- C -> G
- C -> G
- A -> U
- T -> A
- G -> C
- T -> A
- C -> G
Putting it all together, the correct mRNA sequence should be:
Correct mRNA sequence: CUG GUA CAG
Carlos's answer of "CTG GTA CAG" was incorrect because he didn't follow the transcription rules accurately.
### Part 2: Translating mRNA to Amino Acids
Now we'll use the correct mRNA sequence (CUG GUA CAG) to determine the amino acids. The mRNA sequence is read in groups of three bases, called codons. Each codon corresponds to a specific amino acid according to the codon chart.
We split the mRNA sequence into codons:
Codons: CUG, GUA, CAG
Now we will look up each codon in the codon table provided:
1. CUG - According to the table, 'CUG' corresponds to "Leu" (Leucine).
2. GUA - 'GUA' corresponds to "Val" (Valine).
3. CAG - 'CAG' corresponds to "Gln" (Glutamine).
So, using the codon table, we translate the mRNA sequence into amino acids as follows:
Amino Acid Sequence: Leu, Val, Gln
### Summary for Carlos:
1. Correct mRNA Sequence: CUG GUA CAG
2. Codons: CUG, GUA, CAG
3. Amino Acids from mRNA: Leu, Val, Gln
By following these steps, you can accurately transcribe a DNA sequence to mRNA and then translate it to determine the corresponding amino acid sequence using the codon chart. Now you should be able to handle similar questions on your own. Keep practicing, Carlos!
### Part 1: Transcribing DNA to mRNA
Original DNA sequence: GAC CAT GTC
To transcribe DNA to mRNA, we replace each DNA base with its complementary RNA base:
- A (Adenine) -> U (Uracil)
- T (Thymine) -> A (Adenine)
- C (Cytosine) -> G (Guanine)
- G (Guanine) -> C (Cytosine)
Let's transcribe the given DNA sequence into mRNA:
- G -> C
- A -> U
- C -> G
- C -> G
- A -> U
- T -> A
- G -> C
- T -> A
- C -> G
Putting it all together, the correct mRNA sequence should be:
Correct mRNA sequence: CUG GUA CAG
Carlos's answer of "CTG GTA CAG" was incorrect because he didn't follow the transcription rules accurately.
### Part 2: Translating mRNA to Amino Acids
Now we'll use the correct mRNA sequence (CUG GUA CAG) to determine the amino acids. The mRNA sequence is read in groups of three bases, called codons. Each codon corresponds to a specific amino acid according to the codon chart.
We split the mRNA sequence into codons:
Codons: CUG, GUA, CAG
Now we will look up each codon in the codon table provided:
1. CUG - According to the table, 'CUG' corresponds to "Leu" (Leucine).
2. GUA - 'GUA' corresponds to "Val" (Valine).
3. CAG - 'CAG' corresponds to "Gln" (Glutamine).
So, using the codon table, we translate the mRNA sequence into amino acids as follows:
Amino Acid Sequence: Leu, Val, Gln
### Summary for Carlos:
1. Correct mRNA Sequence: CUG GUA CAG
2. Codons: CUG, GUA, CAG
3. Amino Acids from mRNA: Leu, Val, Gln
By following these steps, you can accurately transcribe a DNA sequence to mRNA and then translate it to determine the corresponding amino acid sequence using the codon chart. Now you should be able to handle similar questions on your own. Keep practicing, Carlos!
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