Ahhh yeah I finally remembered a two-part series.
It's an educational graphic novel, but it's right up my alley, especially since I found it while in my Dalek phase.
The Stuff of Life: A Graphic Guide to Genetics and DNA and
Evolution: The Story of Life on Earth
Now, I know what you're thinking...why am I sharing something over something that has started flame wars and shut downs on previous threads?
Because all the information is relayed from an alien scientist to his king while their species threatened by disease - fueled in part because they reproduce asexually.
Also, this is great:
The king and the scientist are a lot of fun in their exchanges, even if it's just down to:
"But why is that thing!"
"Well sire, I'm about to explain why that thing is!"
It's a pretty nice way to step into understanding genetics if textbook learning gets befuddling.