Transposons | Transposable elements | Types of transposons| how transposons work?

This video describes how transposons work. It will answer the following questions
What is the purpose of transposons?
What is transposons in genetics?
What is the role of transposons in mutation?
What are transposons in bacteria?
What are the types of transposons?
What is the basis of classification of transposons?
What is the main difference between the 2 classes of transposons?
How can we determine major classes of transposable elements?