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A scientific illustration of a Christmas Island rat
Genome Spotlight: Christmas Island Rat (Rattus macleari)
The near-complete genome of a recently extinct rodent elucidates the potential—and difficulties—of resurrecting species.
Genome Spotlight: Christmas Island Rat (Rattus macleari)
Genome Spotlight: Christmas Island Rat (Rattus macleari)

The near-complete genome of a recently extinct rodent elucidates the potential—and difficulties—of resurrecting species.

The near-complete genome of a recently extinct rodent elucidates the potential—and difficulties—of resurrecting species.

genetics & genomics, genetics

Drosophila melanogaster on cactus leaf
Fruit Flies Evolve in Time with the Seasons: Study
Natalia Mesa, PhD | Mar 17, 2022 | 5 min read
Researchers find that evolution can operate on extraordinarily fast timescales.
a microscope image of a rotifer
Bacterial Enzyme Keeps Rotifers’ Transposable Elements in Check
Christie Wilcox, PhD | Mar 3, 2022 | 5 min read
Jumping genes in bdelloid rotifers are tamped down by DNA methylation performed by an enzyme pilfered from bacteria roughly 60 million years ago, a study finds.
Conceptual image showing fragmented X chromosomes
How Chaos in Chromosomes Helps Drive Cancer Spread
Samuel F. Bakhoum | Mar 1, 2022 | 10+ min read
A new link between inflammation and rampant chromosomal abnormalities reveals novel strategies to treat diverse malignancies.
Infographic showing how bursting micronuclei promote cancer
Infographic: Chromosome Errors Cause Micronuclei and Drive Cancer
Samuel F. Bakhoum | Mar 1, 2022 | 2 min read
When micronuclei rupture, chromosomes break, recombine, and form circles, causing inflammation and promoting carcinogenic growth.
Man in black suit looking at camera
Pioneering Geneticist C. Thomas Caskey Dies at 83
Natalia Mesa, PhD | Jan 28, 2022 | 3 min read
Caskey’s contributions to the field were instrumental to modern genetics.
A fresh, peeled lychee fruit held above a harvest of fresh lychees
Genome Spotlight: Lychee (Litchi chinensis)
Christie Wilcox, PhD | Jan 27, 2022 | 3 min read
Whole genome sequences reveal multiple domestications of this agriculturally important tree and may hold the secrets to producing the sweet fruit year round.
Spores of Fusarium xylarioides
Researchers Resurrect Coffee-Destroying Fungus—to Study It
Chloe Tenn | Jan 4, 2022 | 4 min read
Comparing the genomes of modern pathogens with those of cryopreserved strains from several decades ago shed light on the evolution of coffee wilt disease outbreaks in Africa.
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.
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.
Artist’s rendering of the protein synthesis process, in which a tRNA molecules carry amino acids to a ribosome that’s decoding a strand of mRNA.
Screen of 250,000 Species Reveals Tweaks to Genetic Code
Dan Robitzski | Nov 9, 2021 | 5 min read
A massive screen of bacterial and archaeal genomes revealed five previously unknown instances where an organism uses an alternate code to translate genetic blueprints into proteins.
Conceptual image of gene expression in DNA
Enhancers: Conserved in Activity, Not in Sequence
Jack J. Lee | Nov 1, 2021 | 8 min read
Certain stretches of DNA that regulate gene expression have evolved differently from protein-coding genes.
Colored Genetic Code DNA Molecule Structure stock photo
Genetic Risks for Depression Differ Between Ancestral Groups
Chloe Tenn | Oct 19, 2021 | 4 min read
A large genome-wide association study in East Asians uncovers novel genetic links to depression, calling attention to the consequences of underrepresentation of non-European groups in genetic research data.
Colored artistic rendition of neurons and plaque buildup
Alzheimer’s Risk Gene Paradoxically Protects Against Memory Loss
Chloe Tenn | Oct 8, 2021 | 2 min read
A new study links a variant of the apolipoprotein E gene called APOE ε4 to better memory in older age, even in the presence of amyloid plaques—a possible explanation for the variant’s persistence despite its association with an increased risk of Alzheimer’s disease.
Two sets of identical twin children sitting
Identical Twins Carry Distinctive Epigenetic Marks: Study
Chloe Tenn | Sep 30, 2021 | 2 min read
Researchers found more than 800 sites in the genome where the twins bore the same chemical tags.
Illustration showing how yeast is used to study histone modifications
Infographic: A Yeast Model for Studying Histone Modifications
Amanda Heidt | Sep 1, 2021 | 1 min read
The methodology involves modifying histones and displaying them on the cell surface for analysis.
Saccharomyces cerevisiae yeast, 3D illustration. Microscopic fungi, baker's or brewer's yeast, are used as probiotics to restore normal flora of intestine
Yeast “Mini Labs” Help Researchers Probe Histone Modifications
Amanda Heidt | Sep 1, 2021 | 3 min read
By harnessing a unique property of yeast, scientists can synthesize histones and the enzymes that modify these proteins, which spool DNA and influence gene expression.
Immunofluorescence image of human tenocytes (cell nuclei in blue, actin in red) with PIEZO1 protein labeled in green (Scale bar: 20 ?m)
Mechanosensory Protein Helps Tendons Stiffen After Exercise
Catherine Offord | Sep 1, 2021 | 2 min read
Researchers identify a role for PIEZO1 in tendon adaptation, and show that people with certain versions of the Piezo1 gene tend to be better jumpers.
Red blood vessels that decrease in diameter as they radiate outward are pictured on a pink and white surface
Antisense Oligonucleotides Cross Rodents’ Blood-Brain Barrier
Abby Olena, PhD | Aug 18, 2021 | 3 min read
RNA-DNA complexes that were modified with cholesterol made it into the brains of rats and mice, where they knocked down target genes.
3 by 5 grid of black and white photos of indigenous Filipino portraits
Indigenous Filipino Group Has Highest Known Denisovan Ancestry
Annie Melchor | Aug 13, 2021 | 3 min read
Researchers found the relatively high proportion of DNA from a hominin cousin—nearly 5 percent—when they scanned more than 1,000 genomes from 118 distinct ethnic groups.
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