Directions: Use the complete codon dictionary (table 10.2) to answer these quest

Question

Directions: Use the complete codon dictionary (table 10.2) to answer these questions. Use the base sequence for mRNA to complete the columns on the following table (table 10.4). (Use the mRNA sequence shown in the table. Do not use the mRNA base pair sequence from the exercise you just completed.) Remember that complementary based painting is the key. Refer to table 10.3 if you have problems. Use one word to describe the relationship between the gene sequence and the mRNA sequence in table 10.4. Describe in a sentence the relationship between the gene sequence and the tRNA sequence in table 10.4. what will the sequence of mRNA nucleotides be if the following represents the bases in a DNA molecule of a structural gene? If a structural gene contains 300 DNA nucleotides, how many amino acids will be used in the protein synthesis process?

Explanation / Answer

In the table - on mRNA UUU means amino acid is Phenylalanine (Phe)

AUC - Isoleucine (Ile)

UGU- Cystine (Cys)

To write amino acids, sequence on mRNA should be considered not tRNA.

2. Transcription

The sequence of mRNA is equal to the non coding strand , but Thymine is replaced by Uracil.

Is a process where DNA sequences based on complementarity converted into mRNA

3. The sequence of nucleotides on gene is equal to tRNA except Thymine. Thymine is replaced by Uracil

4. Sequences are rightly filled.

5. 3 nucleotides is equal to one codon for one amino acid, so if DNA contains 300 nucleotides means it can code for 100 amino acids.

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