Is there any solid scientific evidence that humans have been cloned?

Building glycogen from glucose molecules is an example of what

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real