Word: ancestored
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...That means that ancient regions, which represent genes or portions of genes, have descended in a relatively unchanged manner from a common ancestor," Gilbert told reporters earlier this week. "This supports the theory that introns have facilitated the shuffling of exons from the time of the origin of genes...
...arid badlands of northern Ethiopia's Hadar region have long been a fossil-hunter's paradise. It was there, two decades ago, that paleontologists unearthed the celebrated Lucy, a primitive ancestor of modern humans dating back more than 3 million years. On this trip, though, an international team of scientists was on the trail of something less ancient but much more mysterious. Somewhere between 2 million and 3 million years ago, experts believe, Lucy's descendants had evolved into true humans. But despite decades of searching, scientists had yet to find a single well-dated fossil that showed...
...only provable ancestry is that it is the only provable ancestry to be studied before 1400. The average person did not leave records; indeed the average person did not have a surname before that point in history. It is also commonly thought that most people have a royal ancestor since the children of that class has a better chance of survival than other children. I would contend that more than half of all Americans have such an ancestor. Whether one can prove it or not is a matter of chance and research--and it certainly has nothing to do with...
John Paul stopped short of addressing a point on which Pius was emphatic: that a particular man named Adam must have been our ancestor. Any other theory, Pius maintained, was inconsistent with the doctrine of original sin. But the teaching about Adam has also been superseded, says Father Richard P. McBrien, a liberal theologian at the University of Notre Dame. "No Scripture scholar today would say we are literally descended from two people." To such scholars, and John Paul, the evolution of our bodies matters much less than the evolution of our souls...
...fact, scientists have learned quite a bit about pterosaurs. For example, they know that the first pterosaurs shared a common ancestor with the dinosaurs and appeared on earth at roughly the same time. The earliest pterosaurs sported long, bony tails that functioned as dynamic stabilizers. By contrast, later models looked more like birds, with their tails shrunken to stubs and their necks and heads greatly elongated. They lacked feathers, but their bodies were probably wrapped in a thick, furlike cloak. The range in size of pterosaurs was enormous. Some were as small and sprightly as robins, while others--like Quetzalcoatlus...