Articles tagged Evolution
(106 results)

Guest post by Charles H. Langley. Dic, hospes, doctis caelebs animalculum obisse hicque iacere physis legibus conveniens. (Stranger, tell the learned that the celibate little animal has passed away, and lies here, conforming to the laws of nature.) —John Rundin, with apologies to Simonides and Cicero Thirty-five years ago, in a celebrated News & Views…

Scientists generated a karyotype, chromosome-scale genome assembly, and manual genome annotation for a common ctenophore. Ctenophores—beautiful marine invertebrates also known as “comb jellies”—have long fascinated and perplexed biologists. Phylogeneticists believe that either ctenophores or sponges were the first organisms to branch off from the tree of life, making them the “sister clade” to all other…

Discovery of thiabendazole target explains vascular disrupting action. Even after hundreds of millions of years of evolution, some yeast genes persist mostly intact in humans and other vertebrates. Despite the huge differences between yeast and humans, these genes perform the same molecular function in both organisms but have been adapted over time into new contexts.…

Dick on sabbatical and my good fortune Guest post in memory of Richard Lewontin by Thoru Pederson. When I was a graduate student in the Zoology Department at Syracuse University, a visiting professor took an office across the hall from the lab where I was stationed. He came “across” to me (not a cis-trans test…

Don’t miss the eagerly-anticipated Larry Sandler Memorial Lecture in the Opening Session of the 62nd Annual Drosophila Research Conference! The Larry Sandler Memorial Lecture is presented by an outstanding recent PhD graduate on the opening night of the Conference. This year, the Larry Sandler Awardee is Ching-Ho Chang, who will present the following lecture based…

Yeast circumvent Dollo’s Law and reacquire traits lost tens of millions of years ago from distant relatives. Dollo’s Law, first proposed in the 19th century, holds that evolutionary losses are irreversible — if a species discards a complex trait, it will never reacquire exactly that trait. However, a study published in Genetics highlighted one way that unicellular fungi can…

The James F. Crow Early Career Researcher Award recognizes outstanding achievements by students and recent PhDs presenting their work at the Population, Evolutionary, and Quantitative Genetics (PEQG) Conference, which was part of TAGC Online in 2020. The 2020 winner and finalists for this prestigious PEQG award spoke in a high-profile session at the conference. Check…

Guest post by C. Brandon Ogbunugafor, Assistant Professor at Brown University. John Maynard Smith, born in London on January 6, 1920, was one of the great iconoclasts of the post neo-Darwinian synthesis era, a cult figure whose life was defined by notable contributions across a wide breadth of subfields [1]. He not only authored numerous…

Guest authors C. Brandon Ogbunugafor and Rafael F. Guerrero demystify higher order epistasis through a short story about the perfect brew. Epistasis is the flavor of the month Epistasis is one of the most popular and provocative topics in modern genetics. It has many different definitions, but one especially useful one is that epistasis is…

Improved duplex sequencing identifies spontaneous mutations in bacteria without long-term culturing. Spontaneous mutations are the driving force of evolution, yet, our ability to detect and study them can be limited to mutations that accumulate clonally. Sequencing technology often cannot identify very rare variants or discriminate between bona fide mutations and errors introduced during sample preparation.…

A Wnt protein involved in the formation of the human ovary plays an important role in female zebrafish sex development.    Even though zebrafish are a well-studied research model, how these fish develop into males or females remains rather obscure—in part because the sex of lab strains is not determined by sex chromosomes. Research published…