Dear sir,
i have not understood how to go about the exercise for lesson 1.
Am not able to figure out how to answer the third and fourth questions
concerning number of proteins, exons and introns.
Go to:
https://www.ncbi.nlm.nih.gov/gene/293621
In the windows, after awhile, you'll see the same figure that is in the question.
Use the Help button to find explanations: