Editing List of biologists (section)

===Oc–Ok===
*[[Severo Ochoa]] (1905–1993), Spanish and American biochemist, Nobel Prize awarded the Nobel Prize for work on elucidating the [[genetic code]]
*[[Eugene Odum|Eugene P. Odum]] (1913–2002), American ecologist, coauthor of ''Fundamentals of Ecology''
*[[Howard T. Odum]] (1924–2002), American ecologist who pioneered the field of systems ecology
*[[William Ogilby]] (1808–1873), British zoologist<ref>Abbreviation in zoology: Ogilby</ref> concerned with classification and naming of animal species
*[[William Robert Ogilvie-Grant]] (1863–1924), Scottish ornithologist<ref>Abbreviation in zoology: Ogilvie-Grant</ref> who made many collecting trips, including Socotra and Madeira and the Canaries
*[[Sergey Ognev]] (1886–1951), Russian zoologist<ref>Abbreviation in zoology: Ognev</ref> who studied Russian mammals
*[[Alexander George Ogston]] (1911–1996), British biochemist who explained how an achiral substance can have a chiral product in the tricarboxylate cycle
*[[Tomoko Ohta]] (born 1933), Japanese molecular biologist who developed the [[nearly neutral theory of evolution]]
*[[Reiji Okazaki]] (1930–1975), Japanese molecular biologist who discovered [[Okazaki fragments]], important in DNA replication
*[[Tsuneko Okazaki]] (born 1933), Japanese molecular biologist who discovered [[Okazaki fragments]], important in DNA replication
*[[Lorenz Oken]] (1779–1851), German naturalist<ref>Abbreviation in zoology and botany: Oken</ref> who developed a classification of animals