Genetics
- Animals
Methylation turns a wannabe bumblebee into a queen
Epigenetic changes to bumblebee DNA turns a worker into a reproductive pseudo-queen, suggesting that genomic imprinting could be responsible for the bumblebee social system.
- Genetics
What your earwax says about your ancestry
Both armpit and ear wax secretions are smellier in Caucasians than in Asians, thanks to a tiny genetic change that differs across ethnic groups.
- Genetics
Genes involved in dog OCD identified
Scientists say they have identified several of the genes that trigger obsessive-compulsive disorder in Doberman pinschers, bullterriers, sheepdogs and German shepherds.
- Humans
Clovis baby’s genome unveils Native American ancestry
DNA from skeleton shows all tribes come from a single population.
- Genetics
Origin of Tibetans’ high-altitude adaptations found
Mixing genes of two ancestral populations gave modern Tibetans their ability to withstand high altitude.
- Genetics
When flowers died out in Arctic, so did mammoths
Genetic analysis finds vegetation change in the Arctic around same time as megafauna extinction.
- Genetics
Chemical changes to genes make twins’ pain differ
Chemical changes to genes may make identical twins experience pain differently.
- Humans
DNA suggests humans moved back into Africa
About 3,000 years ago, human populations from western Eurasia migrated back into eastern Africa, specifically Ethiopia.
- Genetics
Bacteria can be genetically tricked into self-destructing
Manipulating microbes’ defenses could lead to targeted antibiotics.
- Genetics
Monkeys born with edited genes
A DNA-snipping technique inspired by bacteria shows therapeutic promise.
- Health & Medicine
Tumors grow faster in cancer-prone mice given vitamins
The tumors killed the mice twice as fast as early-stage lung lesions in mice not given the antioxidants, researchers report.
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