There was a German biologist called Walther (sometimes called Walter) Flemming (1843-1905). He was the founder of cytogenetics. But being a German, he cannot have been Sir Walter Flemming.
Chromosomes
Guyana
Penicillin..used for bacteria infections...
Sir Walter Raleigh
Sir Walter Raleigh was the govenor of the lost colony of Roanoke.
Walther flemming took a sample of mitosis and looked at its reactions
pencillin
pencillin
sir Walter sir Walter
Chromosomes
It is walter flemming
Robert Fleming
Standard Time zones.
what were Sir Walter Voyages
Sir Walter Raleigh.
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Sir Walter Raleigh personality