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- Drawing a number of conclusions from his work on developing embryos, von Baer emphasized that development is epigenetic, proceeding from homogeneous to heterogeneous matter, which he felt made preformationist ideas no longer plausible. He encapsulated his thinking into four statements that are now known as “von Baer’s Laws.”
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In 1828, the Estonian-born embryologist Karl von Baer launched a withering attack on recapitulation. A careful look at embryos revealed that it was impossible to arrange them in any meaningful series.
In 1834, Baer moved back to St Petersburg and joined the St Petersburg Academy of Sciences, first in zoology (1834–46) and then in comparative anatomy and physiology (1846–62). His interests while there were anatomy, ichthyology, ethnography, anthropology, and geography.
Apr 15, 2014 · He popularized this theory when he synthesized theories of ontogeny with Charles Darwin's 1859 theory of the evolution of species via natural selection; more than thirty years after von Baer had proposed his laws of embryology.
Oct 31, 2007 · Drawing a number of conclusions from his work on developing embryos, von Baer emphasized that development is epigenetic, proceeding from homogeneous to heterogeneous matter, which he felt made preformationist ideas no longer plausible. He encapsulated his thinking into four statements that are now known as “von Baer’s Laws.”
As a contribution to the developing history of evo-devo, I present here a previously unknown and quite prescient view about develop-ment and evolution advanced by Karl Ernst von Baer (1792-1876) in the early 19th century.
Karl Ernst von Baer was a Prussian-Estonian embryologist who discovered the mammalian ovum and the notochord and established the new science of comparative embryology alongside comparative anatomy. He was also a pioneer in geography, ethnology, and physical anthropology.
Dec 1, 2013 · In 1828, Karl Ernst von Baer formulated a series of empirically defined rules, which became widely known as the ‘Law of Development’ or ‘von Baer's law of embryology’. This was one the most significant attempts to define the principles that connected morphological complexity and embryonic development.
