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- In illustrating taxonomic patterns and patterns of descent, Haeckel was the first to publish phylogenetic trees showing the evolution of man from lower organisms. Haeckel’s famous comparative embryo drawings served as his evidence for the biogenetic law.
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What did Haeckel believe about human embryos?
Why did Haeckel think embryonic development was a record of evolutionary history?
Did Haeckel misrepresent embryological development?
Why is Ernst Haeckel so controversial?
Jul 6, 2015 · Haeckel’s embryos: the images that would not go away. A new book tells, for the first time in full, the extraordinary story of drawings of embryos initially published in 1868. The artist was accused of fraud – but, copied and recopied, his images gained iconic status as evidence of evolution.
Haeckel believed that, over the course of time, evolution added new stages to produce new life forms. Thus, embryonic development was actually a record of evolutionary history. The single cell corresponded to amoeba-like ancestors, developing eventually into a sea squirt, a fish, and so on.
Jan 30, 2020 · Accordingly, Haeckel believed that human embryos go through stages where they show characteristics of their more primitive ancestors, such as fish gills or monkey tails, mapping out the journey from flopping fish to swinging ape to proud, upstanding human.
- Ernst Haeckel and Comparative Embryology
- Developing An Argument
- Rewriting History For The Greater Glory of The Rev. Moon
- Developmental Anatomy, Darwin, and Evolution
- What Textbooks Say
- Wells's "Well-Developed" Grading Scheme
- Why We Should Still Teach Comparative Embryology
- How Textbooks Could Improve Their Presentations of Comparative Embryology
Ernst Haeckel (1834-1919) is both a hero and a villain in the biological community. He was a prominent figure in the u000blate nineteenth-century comparative anatomy community and is famous for his phylogenetic trees, anatomical illustrations, u000bsupport for evolution, and strong personality. He is perhaps as well known, and considerably misunder...
Wells's entire chapter on embryology amounts to little more than a misreading of Darwin, Haeckel, and others, combined u000bwith a general failure to acknowledge recent work on Haeckel and his embryos by Gould, Richardson, and others. In it, he u000bconflates ideas in history of developmental biology with ideas of contemporary developmental biology...
In the introduction to Icons, Wells states that he first became aware of the problems in evolutionary theory when he u000bwas "finishing his Ph.D. in cell and developmental biology" (Wells 2000:xi). He u000bu000bclaims that he knew that the drawings of u000bembryos presented in textbooks were false because he was a developmental biologist. Shortly ...
Wells opens the chapter by telling us what Darwin thought about development and evolution. Wells uses about 5 different u000bquotes from the Origin in an attempt to show that Darwin was advocating recapitulation in spite of what the data u000bshowed. To do this, he distorts the history. Wells tries to connect Darwin to Haeckel so that he can use th...
For any textbook to show Haeckel's drawings themselves as unqualified statements of developmental anatomy or to u000badvocate "recapitulation" in a Haeckelian sense would be inexcusable, but none of the textbooks reviewed by Wells appear u000bto do so. Wells gleefully excoriates Futuyma for using Haeckel's drawings, but apparently in his fit of rig...
The grading scheme employed by Wells is designed for failure. This is because Wells assumes all drawings to be u000b"redrawn" from Haeckel and gives any book with a drawing an F (Figure 11). Wells does not explain u000bhow one would determine whether they are simply redrawn from Haeckel; in any case none of the books appear to u000bcontain redrawn ...
Despite changes in how we view the role of developmental programs as reflections of evolutionary history, we can still u000bsee how the same embryonic structures develop into different adult structures. We observe the unity of developmental plan u000bin all vertebrates. This is what we see, and no amount of wishful thinking on the part of evolution...
Textbooks could largely improve the presentations of embryology by lengthening their discussions of it, and by using u000bphotos rather than cartoonish drawings. They could also be more explicit about how embryonic precursors develop into u000bdifferent adult structures. Finally, adding discussions of Hox gene complexes (master developmental contro...
Nick Hopwood. Pictures from the past powerfully shape current views of the world. In books, television programs, and websites, new images appear alongside others that have survived from decades ago. Among the most famous are drawings of embryos by the Darwinist Ernst Haeckel in which humans and other vertebrates begin identical, then diverge ...
Full Text. More. Among Ernst Haeckel’s (1834–1919) many provocative works on evolution, morphology, and philosophy, none has been as continually controversial as his embryo drawings, which depict different species passing through similar sequences of embryonic stages and “recapitulating” their common evolutionary history.
Jun 16, 2010 · Published: 2010-06-16. Ernst Heinrich Philipp August Haeckel was a prominent comparative anatomist and active lecturer in the late nineteenth and early twentieth centuries. He is most well known for his descriptions of phylogenetic trees, studies of radiolarians, and illustrations of vertebrate embryos to support his biogenetic law and Darwin ...
