Category: Evolution
Icons of Evolution 10th Anniversary: Haeckel’s Embryos
Does Nothing In Biology Make Sense Except in the Light of Evolution?
A recent article in The Scientist titled “The Devolution of Evolution” states: Nearly 40 years ago Theodosius Dobzhansky wrote: “Nothing in biology makes sense except in the light of evolution.” How is it, then, that so few newly minted PhDs in the biological sciences have taken any formal graduate school courses in evolution or biodiversity? This fosters a knowledge gap that can become difficult to fill by “osmosis” later in a scientific career. Consider the two to five years of intense postdoctoral work, followed by the even more challenging process of earning tenure. Success requires complete dedication to a specialized field of knowledge for professors who then act as advisors for the next generation of scientists, judge hundreds of submitted Read More ›
Marsupials Embryos Develop Differently From “Virtually Every Other Vertebrate”
The 2011 edition of Ken Miller textbook Biology states, “Similar patterns of embryological development provide further evidence that organisms have descended from a common ancestor.” (p. 469) But what happens when supposedly similar types of organisms have very different patterns of embryological development? Would that count as evidence against common ancestry? In fact, researchers are finding striking differences in the development of vertebrates. A recent ScienceDaily release from November 30, 2010, “Marsupial Embryo Jumps Ahead in Development,” states: Duke University researchers have found that the developmental program executed by the marsupial embryo runs in a different order than the program executed by virtually every other vertebrate animal. “The limbs are at a different place in the entire timeline,” said Anna Read More ›
Even More From Jerry Coyne
In my last post I reported that University of Chicago evolutionary biologist Jerry Coyne, who had critiqued my recent Quarterly Review of Biology article concerning laboratory evolution studies of the last four decades and what they show us about evolution, had asked several other prominent scientists for comments. I replied to those of experimental evolutionary biologist John Bull. In a subsequent post Coyne discussed a recent paper by the group of fellow University of Chicago biologist Manyuan Long on gene duplication in fruitflies. After a bit of delay due to the holidays, I will comment on that here. Try as one might to keep Darwinists focused on the data, some can’t help reverting to their favorite trope: questioning Darwinism simply Read More ›