According to Beatty (1986), population genetics defines the core of the modern synthesis. In the first few decades of the 20th century, most field naturalists continued to believe that Lamarckian and orthogenic mechanisms of evolution provided the best explanation for the complexity they observed in the living world.
The Netherlands has been a constitutional monarchy since 1815 and a parliamentary democracy since 1848. Previously, it was a republic from 1581 to 1806, and a kingdom between 1806 and 1810 (it was part of France between 1810 and 1813).
The Netherlands is a country in Western Europe. More than 16 million people live there. To the north and west of the Netherlands is the North Sea. To the east is the country Germany and to the south is the country Belgium. The Netherlands is one of the countries that started the European Union.