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Articles sur DNA mutations

Affichage de 1 à 20 de 24 articles

Sequencing the genome of a virus gives researchers information on how mutations can affect its transmissibility and virulence. catalinr/iStock via Getty Images Plus

Genomic sequencing: Here’s how researchers identify omicron and other COVID-19 variants

DNA sequencing has allowed researchers to catch new COVID-19 variants hours after receiving the first positive test sample.
By Fakhrul Najmi

How can a baby have 3 parents?

The concept of three-parent babies defies what we learned in health class. But how and when is the third parent involved? At what stage? Jennifer Barfield gives us an update on the birds and the bees.
Watching bacteria and viruses duke it out, evolving to outwit each other. UC San Diego

Discovery of a surprise multitasking gene helps explain how new functions and features evolve

A core idea in molecular biology is that one gene codes for one protein. Now biologists have found an example of a gene that yields two forms of a protein – enabling it to evolve new functionality.
As genes are favored or phased out, human evolution continues. ktsdesign/Shutterstock.com

Evolutionary geneticists spot natural selection happening now in people

Comparing genomes of more than 200,000 people, researchers identified genetic variants that are less common in older people, suggesting natural selection continues to weed out disadvantageous traits.
Gene drives aim to deliberately spread bad genes when invasive species such as mice reproduce. Colin Robert Varndell/shutterstock.com

‘Gene drives’ could wipe out whole populations of pests in one fell swoop

Releasing just 100 mice carrying a faulty gene designed to stop them reproducing can remove an entire population of 50,000, a new study shows, paving the way for new eradication efforts.
A young breast-cancer patient in her home. Fototip/Shutterstock

Is cancer just a question of ‘bad luck’?

Two US researchers have traced the majority of cancers to DNA replication errors during our natural cell replacement. Their finding asks for a renewed inquiry into the role of “chance” in cancer.
Laboratory mice are among the first animals to have their diseases treated by CRISPR. tiburi via Pixabay.com

CRISPR controversy raises questions about gene-editing technique

A new research paper reports dangerous side effects in CRISPR-edited mice. Some scientists are pushing back, placing blame for the unwanted mutations on the experiment, not the technique.

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