Alexander Kovalevsky
Encyclopedia
Alexander Onufrievich Kovalevsky (7 November 1840 Dvinsk (now Daugavpils
, Latvia
) – 1901) was a Russian embryologist who studied medicine at the University of Heidelberg and became professor at St Petersburg. He showed that all animals go through a period of gastrulation
.
Daugavpils
Daugavpils is a city in southeastern Latvia, located on the banks of the Daugava River, from which the city gets its name. Daugavpils literally means "Daugava Castle". With a population of over 100,000, it is the second largest city in the country after the capital Riga, which is located some...
, Latvia
Latvia
Latvia , officially the Republic of Latvia , is a country in the Baltic region of Northern Europe. It is bordered to the north by Estonia , to the south by Lithuania , to the east by the Russian Federation , to the southeast by Belarus and shares maritime borders to the west with Sweden...
) – 1901) was a Russian embryologist who studied medicine at the University of Heidelberg and became professor at St Petersburg. He showed that all animals go through a period of gastrulation
Gastrulation
Gastrulation is a phase early in the embryonic development of most animals, during which the single-layered blastula is reorganized into a trilaminar structure known as the gastrula. These three germ layers are known as the ectoderm, mesoderm, and endoderm.Gastrulation takes place after cleavage...
.