What is the definition of a dominant trait in biology? What is the difference between biology and AP biology? What is the difference between molecular biology and cell biology?
DNA gyrase, often referred to simply as gyrase, is an enzyme that relieves strain while double-strand DNA is being unwound by helicase. It is also known as DNA topoisomerase II. This causes negative supercoiling of the DNA. Bacterial DNA gyrase is the target of many antibiotics, including nalidixic acid, novobiocin, and ciprofloxacin.
Heat shock is a sudden increase in temperature used to propel a plasmid into a bacterial cell. The recovery step of a bacterial transformation experiment gives genetically engineered bacteria time to produce antibiotic resistance protein. In a bacterial transformation experiment, antibiotic selection is used to isolate transformed cells by eliminating the untransformed ones.