What feature do cloning vectors typically contain to facilitate selection?
Practice Questions
Q1
What feature do cloning vectors typically contain to facilitate selection?
Antibiotic resistance genes
Introns
Exons
Promoters
Questions & Step-by-Step Solutions
What feature do cloning vectors typically contain to facilitate selection?
Step 1: Understand what a cloning vector is. A cloning vector is a small piece of DNA used to carry foreign DNA into a host cell.
Step 2: Learn about the purpose of cloning vectors. They help scientists insert and replicate DNA in cells.
Step 3: Identify the need for selection. When scientists insert DNA into a host cell, they want to find out which cells successfully took up the DNA.
Step 4: Know about antibiotic resistance genes. These are genes that give cells the ability to survive in the presence of certain antibiotics.
Step 5: Connect antibiotic resistance to selection. Cloning vectors often include antibiotic resistance genes so that only the cells that have successfully taken up the vector (and the foreign DNA) can survive when exposed to the antibiotic.
Step 6: Conclude that the presence of antibiotic resistance genes allows scientists to easily identify and select the cells that have been successfully transformed.
