12 Questions
What is the enzyme responsible for conducting DNA breakage and joining reactions needed for transposable elements to move?
Transposase
Which type of transposons contain long terminal repeats (LTRs) in their structure?
Retroviral-like retrotransposons
In which class of transposons does the translocating DNA segment get directly cut out of the donor DNA and joined to the target site by a transposase?
DNA-only transposons
Which enzyme transcribes the RNA molecule back into DNA in retroviral-like retrotransposons?
Reverse transcriptase
What is the name of the enzyme that catalyzes the insertion reaction in nonretroviral retrotransposons?
Integrase
Which element contains a leucine zipper (LZ) domain and a C-terminal nucleic acid binding domain?
ORF1
What is the main characteristic of site-specific recombination?
Exchange of genetic material between DNA strands with sequence homology
How long are the short DNA strands involved in site-specific recombination?
30-200 nucleotides
Which of the following is true about transpositional site-specific recombination?
Involves genetic elements moving to different genome locations
How do site-specific recombinases catalyze the rearrangement of DNA?
Recognizing and binding to short DNA sequences
What happens during conservative site-specific recombination?
DNA exchange occurs between segments with sequence homology
What is an outcome of the integration of bacteriophage DNA into a host genome?
Alteration of gene order in the host genome
Test your knowledge on site-specific recombination, the exchange of genetic material between DNA strands with sequence homology. Learn about the mechanisms involved, such as bacterial genome replication, movement of genetic elements, and alteration of gene order.
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