каков фалсификат:pos2::pos2:
еве ембрион на човек и свиња..
понатаму
ова немаш поим од кога е....еве ај
Karl Ernst von Baer (1792-1876). German zoologist, comparative anatomist, and scientific explorer. Full name: Karl Ernst Ritter von Baer, Edler von Huthorn. One of the founders of embryology, von Baer discovered the notochord and the embryonic blastula. He also established the fact that mammals develop from eggs and clarified the role of the germ layers in vertebrate development. His book,
Über Entwickelungsgeschichte der Thiere (
On the Development of Animals) surveyed available knowledge of vertebrate development and served as the starting point for the field of comparative embryology.
Von Baer is perhaps best remembered for his demonstration that the early embryos of very distinct types of organisms are quite similar -- this at a time when many still believed that embryos were perfectly formed from earliest inception (see figure, below right). He showed that the various traits characteristic of particular types of organisms appear only later in the course of development. This idea influenced Darwin who transferred von Baer's description of embryonic development to the context of evolutionary development -- Darwin proposed that generalized forms would evolve into specialized forms as evolution progressed (read more). Von Baer's comparison of embryos also did much to undermine the old idea that humans are sharply distinct from animals, since the embryos from which humans originate are so much like those of other animals.
Von Baer's comparisons of the embryos of disparate
organisms, including a human embryo (rightmost series).
The similarity between the earliest stages is obvious.
Source: Über Entwickelungsgeschichte der Thiere
Von Baer made important contributions to arctic biology, meteorology, and geography. He was a founder and
the first president of the Russian Geographical Society. In 1837 he explored the island of Novaya Zemlya off the northern coast of Russia. He also explored the Caspian Sea and the northern coast of Scandinavia.
Понатаму
Developmental biology
Molecular biology and genetics is providing evidence of close similarities between the development of organisms at the genetic and molecular level
Summary
- Organisms have similar structure (homologies) even if they have different ecologies
- Vestigial organs imply trace of earlier history
- Ontogeny shows divergent adult morphologies started from very similar beginings
Исус се надева дека ќе го разберете...