Question

Question 7 2 pts drug resistant none promoter length 29 bpm 1 78 bp C 113 bp 155 bpc none doubling time no growth 5 hours 5 hours 3 hours 3 hours none yes 320 bp yes The experimental results in Figure 2.16 addressed which experimental question? How fast do cells grow when given promoters of different tengths? Whether or not promoters are upstream or downstream of a particular sene? Ane promoters located in the first 155 bases upstream of a gene? How far upstream of the gene does particular promoter sequence extend?

Answer 1

The experimental results in the figure answers “Are promoters located in the first 155 bases upstream of a gene?”.

I believe that the promoter is located in between 113 bp and 155 bp. Because, in the presence of 113 bp promoter alone (or even 78 bp promoter), cells double slowly (5 hours) due to lack of expression of the gene responsible for drug-resistance. However, in the presence of 113 bp & 320 bp promoter, the gene responsible for drug-resistance is expressed thereby reducing the cell doubling time from 5 to 3 hours.