Search results
Results from the WOW.Com Content Network
The theory of recapitulation, also called the biogenetic law or embryological parallelism—often expressed using Ernst Haeckel's phrase "ontogeny recapitulates phylogeny"—is a historical hypothesis that the development of the embryo of an animal, from fertilization to gestation or hatching (), goes through stages resembling or representing successive adult stages in the evolution of the ...
In Jena he is remembered with a monument at Herrenberg (erected in 1969), [68] an exhibition at Ernst-Haeckel-Haus, [69] and at the Jena Phyletic Museum, which continues to teach about evolution and share his work to this day. [70] The ratfish, Harriotta haeckeli is named in his honor. [71] The research vessel Ernst Haeckel is named in his ...
The tree of life or universal tree of life is a metaphor, conceptual model, and research tool used to explore the evolution of life and describe the relationships between organisms, both living and extinct, as described in a famous passage in Charles Darwin's On the Origin of Species (1859). [1]
Evolutionary progress as a tree of life. Ernst Haeckel, 1866 Lamarck's two-factor theory involves 1) a complexifying force that drives animal body plans towards higher levels (orthogenesis) creating a ladder of phyla, and 2) an adaptive force that causes animals with a given body plan to adapt to circumstances (use and disuse, inheritance of acquired characteristics), creating a diversity of ...
Today, trees and other plants are at the mercy of animals, and so have need of an advocate like the Lorax. In the. In the 2012 computer animated movie The Lorax (based on the Dr. Seuss book of the ...
Haeckel's Paleontological Tree of Vertebrates (c. 1879). The evolutionary history of species has been described as a "tree" with many branches arising from a single trunk. While Haeckel's tree is outdated, it illustrates clearly the principles that more complex and accurate modern reconstructions can obscure.
The "Paleontological Tree of the Vertebrates," from the 5th edition of The Evolution of Man (London, 1910) by Ernst Haeckel. The evolutionary history of species has been described as a tree, with many branches arising from a single trunk.
Some of the largest and oldest trees in Australia have been estimated to hold more than 100,000 liters (26,400 gallons) of water," said botanist and study co-author Andrew Leitch of Queen Mary ...