They are used in top down mapping to cut a chromosome into chunks of these sizes on average.

I'm going to, instead, in a minute or two, show you an early, crude video because I think it's a better way to tell a story.

What compelled you to tell this story?

I spent a lot of time thinking about the best way to tell this story, and I wondered if the best way was going to be a PowerPoint or a short film and where exactly was the beginning or the middle or the end?