12 Questions
Which mechanism involves DNA transfer from the environment into bacteria?
Transformation
Which of the following is NOT a mechanism of genetic exchange in bacteria?
Replication
What did Joshua Lederberg and Edward Tatum demonstrate in 1946?
Bacteria can transfer and recombine genetic information
What is more frequent for some bacteria than for others?
Conjugation
What is one key difference between genetic exchange in bacteria and sexual reproduction in diploid eukaryotes?
Genetic material is not recombined in bacteria
What is the process in which recipient cells acquire genes from free DNA molecules in the surrounding medium called?
Transformation
Which process involves the transfer of a plasmid from one bacterium to another?
Conjugation
Which of the following species is NOT mentioned as an example of competent bacteria in the text?
Escherichia coli
What plays an important role in the initial identification of DNA as the genetic material?
Transformation
In bacterial transformation, what happens when a dead bacterium releases DNA fragments into the environment?
The DNA fragments are degraded if not recombined into the host DNA
Which cycle of viral replication involves the integration of viral DNA into the host genome?
Lysogenic cycle
How can genes be mapped in bacteria according to the text?
By exploiting existing variation within a population
Explore how bacteria can transfer and recombine genetic information through transformation, conjugation, and transduction. Learn how this process paved the way for using bacteria as model genetic organisms.
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