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).
Amsterdam is the country's capital, while The Hague holds the Dutch seat of government and parliament. The port of Rotterdam is the largest port in Europe â as large as the next three largest combined-and was the world's largest port between 1962 and 2004.he Netherlands has a long history of social tolerance and is generally regarded as a liberal country, having legalised abortion, prostitution and euthanasia, while maintaining a progressive drugs policy. In 2001 it became the world's first country to legalise same-sex marriage.