What type of gene transfer requires a bacteriophage?
What type of gene transfer requires a bacteriophage? Transduction
What is a bacteriophage?
What is a bacteriophage? It is a virus that infects bacteria
What type of phage is necessary for specialized transduction?
What type of phage is necessary for specialized transduction? It requires a lysogenic phage A lysogenic phage integrates its DNA into the bacterial chromosome and becomes a prophage
When does specialized transduction occur?
When does specialized transduction occur? Only when the prophage incorrectly excises itself from the bacterial chromosome and enters into a lytic cycle Prophage Lytic cycle
When does transformation occur?
When does transformation occur? When a cell is competent and picks up DNA that has been released into the environment
What is generalized transduction?
What is generalized transduction? When a lytic phage accidentally transfers a random piece of chromosomal DNA
What type of mutation is shown here?
This is a missense mutation.
What type of mutation is shown here?
This is a nonsense mutation.
2-aminopurine is an example of __________?
2-aminopurine is an example of a nucleoside analog It is a chemical mutagen
How does Non-ionizing radiation act as a mutagen?
How does Non-ionizing radiation act as a mutagen? It causes the formation of thymine-dimers
What enzymes are needed for “dark repair” of thymine dimers?
What enzymes are needed for “dark repair” of thymine dimers? A nuclease cuts on either side of the dimer DNA polymerase replaces the missing strand DNA ligase seals the sugar-phosphate backbone