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tag sex chromosome culture ecology

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.
Illustration showing a puzzle piece of DNA being removed
Large Scientific Collaborations Aim to Complete Human Genome
Brianna Chrisman and Jordan Eizenga | Sep 1, 2022 | 10+ min read
Thirty years out from the start of the Human Genome Project, researchers have finally finished sequencing the full 3 billion bases of a person’s genetic code. But even a complete reference genome has its shortcomings.
mixing blue and pink smoke, symbolic of the muddled boundaries between sexes
Opinion: Biological Science Rejects the Sex Binary, and That’s Good for Humanity
Agustín Fuentes | May 12, 2022 | 5 min read
Evidence from various sciences reveals that there are diverse ways of being male, female, or both. An anthropologist argues that embracing these truths will help humans flourish.
Non-chimp Animal Culture
Bob Grant | Aug 1, 2007 | 3 min read
Non-chimp Animal Culture By Bob Grant ARTICLE EXTRAS 1 that sponging is a socially learned behavior and likely not the result of genetic inheritance. "We were the first to consider extensive genetic data to actually exclude genetic explanations for the behavior," says Krützen. He and his team took tissue samples from 185 dolphins in Shark Bay, thirteen of which were known adult spongers. Only one of these spongers was male. The researchers genotyped each individual for 12 bi-par
Chromosome Analysis Goes High Tech
Ricki Lewis | Oct 15, 1989 | 5 min read
Since the 1 920s, when researchers began to study chromosomes, the analysis of human chromosomes has presented a particularly tough technological challenge, simply because there are so many of them. When displayed under a light microscope. the strands of human genetic material tend to bunch together maddeningly, overlapping and intertwining like so much spaghetti. For these reasons, it wasn’t until 1956 that the correct number of 46 human chromosomes (23 pairs) was clearly demonstrated.
The Scientist Staff | Mar 29, 2024
A scanning electron micrograph of a coculture of E. coli and Acinetobacter baylyi. Nanotubes can be seen extending from the E. coli.
What’s the Deal with Bacterial Nanotubes?
Sruthi S. Balakrishnan | Jun 1, 2021 | 10+ min read
Several labs have reported the formation of bacterial nanotubes under different, often contrasting conditions. What are these structures and why are they so hard to reproduce?
The Proteasome: A Powerful Target for Manipulating Protein Levels
John Hines and Craig M. Crews | May 1, 2017 | 10+ min read
The proteasome’s ability to target and degrade specific proteins is proving useful to researchers studying protein function or developing treatments for diseases.
Surpassing the Law of Averages
Jeffrey M. Perkel | Sep 1, 2009 | 7 min read
By Jeffrey M. Perkel Surpassing the Law of Averages How to expose the behaviors of genes, RNA, proteins, and metabolites in single cells. By necessity or convenience, almost everything we know about biochemistry and molecular biology derives from bulk behavior: From gene regulation to Michaelis-Menten kinetics, we understand biology in terms of what the “average” cell in a population does. But, as Jonathan Weissman of the University of Califo
Researchers Receiving MacArthur Fellowships Demonstrate 'Capacity To Make A Difference'
Bruce Anderson | Sep 14, 1997 | 6 min read
PRIZE WITH A PRICE: Science historian Peter Galison has taken some ribbing from his family since being named a MacArthur fellow. One could almost pity Peter Galison. A historian of science at Harvard University, Galison is one of seven members of the scientific community among the 23 recipients of this year's John D. and Catherine T. MacArthur Foundation Fellowships. The coveted five-year awards provide unrestricted support plus health insurance to talented individuals, with no reports or proj

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