In a controlled experiment, there are two groups. The control group is a group that nothing happens to. The experimental group is the group that you subject to the variable with which you are experimenting. At the end of the experiment, you test the differences between the control group, for whom nothing happened, and the experimental group, which received the variable. The difference (or similarities) between the two groups is how your results are measured.
A control group is the group used for comparison in an experiment. One group receives the treatment that is being tested by the experiment; another group (the control group) has the exact same controlled environment, but does not receive this treatment. The effectiveness of the treatment can then be established by comparison with the control group.
Answer:
True. This process is called transduction.
Explanation:
When a virus infects a host, it incorporates its genetic material into the host cell and uses the host cell to replicate its own material. When the virus breaks out of the host cell i.e. lyses the host cell, the host's DNA is cut into bits. The virus can then incorporate (take in) part of the host’s DNA into its own.
When this virus attacks a new host, the foreign DNA it got from host 1 can now be introduced to the second host. This is possible because viruses inject their DNA (or RNA) into their host.
When the second host replicates, the new DNA introduced by the virus will also be replicated to its offspring.
This process is has been recorded in bacteria. Viruses that infect bacteria are called bacteriophage.
