The last one proved a bit tricky so this one should be easier. The guy was one of those folk who didn't just stick to biology - show off.
As for last week's Biologist:
It was Reiji Okazaki who along with his wife, Tsuneko, described "okazaki fragments" - short molecules of single-stranded DNA that are formed on the lagging strand during DNA replication.
As anonymous said I should have put a picture of the two of them up but i failed to find one. My bad.