A promoter sequence is likely to be (check all that apply):

a. located within a few dozens nucleotides of the gene it controls

b. orientation dependent

c. orientation independent

d. located downstream of the gene it controls

e. located upstream of the gene it controls

f. located either nearby or at great distance from the gene it controls

Question

Hugo Barnes

Biology

15 February, 08:58

A promoter sequence is likely to be (check all that apply):

a. located within a few dozens nucleotides of the gene it controls

b. orientation dependent

c. orientation independent

d. located downstream of the gene it controls

e. located upstream of the gene it controls

f. located either nearby or at great distance from the gene it controls

+2

Answers (2)

Know the Answer?

Deon Blankenship · Answer 1

b. orientation dependent

e. located upstream of the gene it controls

Explanation:

Promoter sequences:

These are the sequences present within the DNA on which RNA polymerase binds and start transcription of a gene. These sequences are present directly upstream of transcription initiation site at the 5' end.

Prokaryotes and Eukaryotes both have specific promoter location site which is fixed. So first (a) and Last (f) options of this question are wrong.

This sequence have specific orientation Like TATA box so these are orientation dependent.

These sequences are present directly upstream of transcription initiation site at the 5' end.

Adrian Mccall · Answer 2

Answer: Option E.

Promoter sequence is located upstream of gene it controls.

Explanation:

Promoter sequence is a sequence of DNA that shows where transcription of a gene by RNA (ribonucleic acid) polymerase starts. It is located at the upstream of the gene or transcription start site of the gene it controls. It controls the binding of RNA polymerase to DNA (deoxy ribonucleic acid)