Mikhail Navashin

Mikhail Sergeevich Navashin
Михаил Сергеевич Навашин
Alma materUniversity of California, Berkeley (PhD)
Known forDiscovery of ring chromosomes; research on chromosome translocations and amphiplasty
Scientific career
FieldsCytology, cytogenetics

Mikhail Sergeevich Navashin (Russian: Михаил Сергеевич Навашин; 27 February 1896 – 28 September 1973) was a Soviet cytologist and cytogeneticist known for his work on plant chromosomes and chromosome evolution. He was among the first researchers to demonstrate chromosomal translocations in plants and proposed a hypothesis linking translocations to changes in basic chromosome numbers during evolution. Navashin is also known for providing the first explicit cytological description of ring chromosomes in plants, reported in 1930 in species of the genus Crepis. Ring chromosomes were subsequently described in animals by Lilian Vaughan Morgan in Drosophila melanogaster and analyzed in detail in maize by Barbara McClintock in the early 1930s.

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