Below is a partial DNA sequence used to answer the following questions. 5\' - TA

Question

Below is a partial DNA sequence used to answer the following questions.
5' - TATGCAGCACATT - 3'
3' - ATACGTCGTGTAA - 5'

If transcription occurred from left to right, which strand is the template strand?

If transcription occurred from left to right, which strand is the template strand?

Part B

If transcription occurred from left to right, what the RNA sequence would be produced?

If transcription occurred from left to right, what the RNA sequence would be produced?

Part C

If transcription occurred from left to right, what is the second amino acid in the growing polypeptide chain?

If transcription occurred from left to right, what is the second amino acid in the growing polypeptide chain?

Part D

If transcription occurred from right to left, which strand is the template strand?

If transcription occurred from right to left, which strand is the template strand?

Part E

If transcription occurred from right to left, what RNA sequence would be produced?

If transcription occurred from right to left, what RNA sequence would be produced?

Part F

If transcription occurred from right to left, what is the second amino acid in the growing polypeptide chain?

If transcription occurred from right to left, what is the second amino acid in the growing polypeptide chain?

3' - TATGCAGCACATT - 5' 5' - TATGCAGCACATT - 3' 5' - ATACGTCGTGTAA - 3' 3' - ATACGTCGTGTAA - 5'

Explanation / Answer

From the given data,

5' - TATGCAGCACATT - 3'
3' - ATACGTCGTGTAA - 5'

Part-A:

If transcription occurs from left to right, then the strand that acts as a template is 3’ - ATACGTCGTGTAA - 5'. Thus, the correct option is (D).

Part B:

The RNA sequence would be 5' - UAUGCAGCACAUU - 3'. Thus, the correct option is (D).

Part C:

If transcription occurred from left to right the second amino acid in the growing polypeptide chain is glutamine (Gln). Thus, the correct option is (B).

Part D:

If transcription occurs from right to left, then the strand that acts as a template is 5' - TATGCAGCACATT - 3'. Thus, the correct option is (C).

Part E:

The RNA sequence would be 3' - AUACGUCGUGUAA - 5'. Thus, the correct option is (B).

Part F:

If transcription occurred from right to left (because you have to find the start codon) the second amino acid in the growing polypeptide chain is cysteine (Cys). Thus, the correct option is (D).

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