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tag genetic variation evolution culture

Yeast Made to Harvest Light Hint at Evolution’s Past
Kamal Nahas, PhD | Feb 21, 2024 | 6 min read
Scientists transferred light-harvesting proteins into yeast for the first time, shining a light on the past lives of eukaryotic cells.
Different colored cartoon viruses entering holes in a cartoon of a human brain.
A Journey Into the Brain
Danielle Gerhard, PhD | Mar 22, 2024 | 10+ min read
With the help of directed evolution, scientists inch closer to developing viral vectors that can cross the human blood-brain barrier to deliver gene therapy.
A person moving the hands of a vintage clock backwards.
Synthetic Circuits Reveal the Key to Rewinding the Cellular Clock
Charlene Lancaster, PhD | Mar 12, 2024 | 4 min read
Using a circuit-based system, scientists determined the ideal transcription factor levels to promote the successful reprogramming of fibroblasts into induced pluripotent stem cells.
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.
WITH VIDEO
One chimpanzee has its hand on the ear of another, as it peers onto the back of its neck. A third chimpanzee is in the background.
Chimp Groups Have Their Own Distinct “Handshakes”
Robin Donovan | Jun 18, 2021 | 4 min read
A 12-year study shows variation among primate groups in how the animals clasp hands during grooming, but consistency within them, even as group membership shifts over time.
Variations on a Gene
Amy Francis | Jul 23, 2000 | 10+ min read
Photodisc Although President Bill Clinton surely had something in mind during his 2000 State of the Union address when he asked the nation to "celebrate our diversity," insights into human diversity at the molecular level are promising to speed drug discovery and revolutionize medicine to mark- edly improve human health. Individuals differ at one in 1,000 base pairs, which adds up to a whopping number of human genetic variations when applied to the roughly three billion base pairs of the human g
Infographic: The Genetics of Fragile X Syndrome
Randi Hagerman | Sep 1, 2019 | 3 min read
Variation in the number of CGG repeats in the FMR1 gene at the bottom of the X chromosome can lead to increased levels of mRNA or decreased levels of protein—both conditions that cause disease.
Prion-driven evolution
William Wells | Oct 5, 2000 | 1 min read
The yeast protein Sup35 is essential for translation termination, but its prion [PSI+] form reduces the fidelity of the termination process. Conversion of Sup35 into the prion form could therefore alter the sequence of multiple proteins at the same time, perhaps providing an engine for evolutionary change. In the 28 September Nature, True and Lindquist find that in nearly half of a long list of culture conditions tested, the presence of [PSI+] exerted a substantial effect on strain growth (Natur
Geneticist Luigi Luca Cavalli-Sforza Dies
Sukanya Charuchandra | Sep 6, 2018 | 2 min read
He was known for his work on the gene-culture theory of human evolution and the Human Genome Diversity Project.
Watercolor coronaviruses in green, red, blue, and purple are layered above an abstract background of watercolor swashes
Plenty of Evidence for Recombination in SARS-CoV-2
Abby Olena, PhD | Sep 2, 2021 | 7 min read
Different variants of the virus behind the COVID-19 pandemic are swapping chunks of genetic material, but it’s not yet clear what implications that may have for public health.

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