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tag epigenetics evolution developmental biology cell molecular biology ecology

Cellular DNA and epigenetics
Do Epigenetic Changes Influence Evolution?
Katarina Zimmer | Nov 1, 2022 | 10+ min read
Evidence is mounting that epigenetic marks on DNA can influence future generations in a variety of ways. But how such phenomena might affect large-scale evolutionary processes is hotly debated.
A Periodic Table for Biology
John Torday | Jun 20, 2004 | 5 min read
COOPERATIVE CELLS:Courtesy of Michael CarrollThe evolution of complex biologic organisms began with the symbiotic relationship between pro- and eukaryotes (I). This relationship gave rise to mitochondria (II), and the resulting diversity of unicellular organisms (III) led to their metabolic cooperativity (IV) mediated by ligand-receptor interactions and cell-cell signaling. Natural selection generated an increasing complexity (V). Failed homeostatic signaling (VI) recapitulates hylogeny/ontogeny
Top Five Institutions in Biological Sciences Doctorate Programs
Karen Young Kreeger | Oct 15, 1995 | 2 min read
Programs Author: Karen Young Kreeger (Ranked by scores on a survey of scholarly quality of program faculty among peers. Scores on a scale of 0 to 5*") Rank Institution Score Biochemistry and Molecular Biology 1 University of California, San Francisco 4.84 2 Massachusetts Institute of Technology 4.83 Stanford University 4.83 3 University of California, Berkeley 4.81 4 Harvard University 4.80 5 Yale University 4.59 Cell and Developmental Biology 1 Massachusetts Institute of Technology 4.86 2 Ro
bacteria and DNA molecules on a purple background.
Engineering the Microbiome: CRISPR Leads the Way
Mariella Bodemeier Loayza Careaga, PhD | Mar 15, 2024 | 10+ min read
Scientists have genetically modified isolated microbes for decades. Now, using CRISPR, they intend to target entire microbiomes.
A semi-translucent hydra, complete with a body column, head, and multiple tentacles, is pictured in front of a gray background.
How Hydras Regenerate Decapitated Heads
Dan Robitzski | Dec 14, 2021 | 5 min read
Hydra vulgaris constantly replenish the cells in their heads and grow new ones to reproduce asexually. But gene expression analyses reveal that regenerating a head after an injury is a very different process.
zebrafish in an aquarium
Epigenetics May Remember Ancestors’ Mutations
Holly Barker, PhD | Dec 1, 2022 | 4 min read
Parents’ mutations, even if they’re not inherited by offspring, could affect subsequent generations through changes to epigenetic marks, a study finds.
5 images related to stories highlighted in the article, including DNA strand, insect, and dog
Our Favorite Genetics Stories of 2021
Christie Wilcox, PhD | Dec 23, 2021 | 4 min read
Studies The Scientist covered this year illustrate the expanding importance of genetic and genomic research in all aspects of life science, from ecology to medicine.
Short Shrift to Evolution?
Barry Palevitz and Ricki Lewis | Feb 1, 1999 | 7 min read
Editor's Note: In this essay, the authors--both scientists and writers--discuss recent news stories on evolution and express their opinions on how the stories were handled by the mainstream press. Evolution took center stage at the National Association of Biology Teachers (NABT) annual meeting in Reno, Nev., Nov. 3-8, 1998. If the teachers needed a theme, evolution was a logical choice--after all, it underlies and unifies contemporary biology. But NABT had other fish to fry. Despite a spate of c
Sensory Biology Around the Animal Kingdom
The Scientist | Sep 1, 2016 | 10+ min read
From detecting gravity and the Earth’s magnetic field to feeling heat and the movement of water around them, animals can do more than just see, smell, touch, taste, and hear.
A Pioneer Presses Search For 'Other Side of Biology'
Gerald Edelman | Nov 13, 1988 | 4 min read
When I was a high school student, I came across Erwin Schrödingers What Is Life?. I still remember my exultant reaction—a combination of adolescent pride in feeling able to understand ideas considered beyond a young person’s means, and a genuine intellectual thrill engendered by the problems that Schrödinger addressed. Upon rereading the book, it appears to me that its major value was to provoke interest in a central problem of biology. Schrödinger’s question

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