Question

If the origin of transfer was located directly to the right of the galE gene on this map of the E. coli chromosome, and gene transfer proceeded counterclockwise, how many minutes after the galE gene was transferred would the dnaB gene be transferred in an interrupted mating experiment?

Answer 1

The dnaB gene would be transferred approximately 80 minutes after the galE gene in an interrupted mating experiment.

Step-by-step explanation:

The dnaB gene would be transferred approximately 80 minutes after the galE gene in an interrupted mating experiment.

In the Hfr mating experiment, the transfer of genes in E. coli proceeds counterclockwise around the chromosome. This means that the gene located directly to the right of the galE gene would be the dnaB gene. The transfer of the entire E. coli chromosome by conjugation takes approximately 100 minutes.

Since the galE gene is located at the starting point, it would be the first gene transferred. Assuming a linear transfer rate, the dnaB gene, located directly to the right of the galE gene, would be transferred approximately 80 minutes after the galE gene.