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If information in the below unwound DNA molecule was being transcribed, where would the promoter be located? DNA template strand                    5' ____________________________ 3'DNA complementary strand         3' ____________________________ 5' Select one alternative:to the left of the DNA template strandto the right of the DNA template strandat the 3' end of the newly made RNAto the right of the DNA complementary strand

Question

If information in the below unwound DNA molecule was being transcribed, where would the promoter be located? DNA template strand                    5' ____________________________ 3'DNA complementary strand         3' ____________________________ 5' Select one alternative:to the left of the DNA template strandto the right of the DNA template strandat the 3' end of the newly made RNAto the right of the DNA complementary strand

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Solution 1

The promoter would be located to the left of the DNA template strand.

Here's why:

The promoter is a region of the DNA that initiates transcription of a particular gene. It's located upstream of the gene, on the DNA template strand. Transcription always proceeds from the 3' end to the 5' end of the template strand. This means that the promoter region is always towards the 5' end of the template strand, which in this case is to the left of the DNA template strand.

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Solution 2

The promoter would be located to the right of the DNA template strand.

Here's why:

Transcription begins at the promoter region of the DNA. The promoter is a sequence of DNA that signals the start of a gene and is the site where RNA polymerase binds to initiate transcription.

In the given DNA molecule, the template strand is shown from 5' to 3' direction. Transcription proceeds in this direction, meaning that the promoter region would be at the 5' end of the template strand.

However, when we look at the physical orientation of the DNA molecule as presented, the 5' end of the template strand is on the right. Therefore, the promoter would be located to the right of the DNA template strand.

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