Answer:
When directed mutagenesis which is also called reverse genetics is used, only a single mutation per genome is introduced. In contrast, the number of mutations per genome introduced by random mutagenesis is usually difficult to control. It is likely that the strain you obtained with a mutation in gene X after random mutagenesis contained an additional mutation or perhaps multiple mutations which ultimately was/were responsible for loss of virulence in your favorite pathogen.
do u mean microbial symbiosis?
Answer:
Symbiosis is a relationship between two organisms
Types of Interactions
Positive interaction: Mutualism, Syntrophism, Proto-cooperation, Commensalism
Negative interaction: Ammensalism (antagonism), parasitism, predation
Bird droppings that contain seeds from a different location" is the correct answer. Sometimes when seeds from different areas are ingested, the genetic material is passed on.