1. Genetics

    Early Polynesians didn’t go to Americas, chicken DNA hints

    Contamination of ancient chicken DNA may explain previous report linking Polynesians to South America.

  2. Genetics

    Giant moa thrived before people reached New Zealand

    Humans probably caused the extinction of giant wingless birds called moa in New Zealand, DNA evidence suggests.

  3. Life

    Protein linked to motor nerve cells being fast or slow

    The protein, Delta-like homolog 1, is made in 30 percent of motor neurons and helps to determine at which speed the cells work, research shows.

  4. Genetics

    Neanderthal Man

    The hottest thing in human evolution studies right now is DNA extracted from hominid fossils. Svante Pääbo, the dean of ancient-gene research, explains in Neandertal Man how it all began when he bought a piece of calf liver at a supermarket in 1981.

  5. 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.

  6. 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.

  7. 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.

  8. Humans

    Clovis baby’s genome unveils Native American ancestry

    DNA from skeleton shows all tribes come from a single population.

  9. Genetics

    Origin of Tibetans’ high-altitude adaptations found

    Mixing genes of two ancestral populations gave modern Tibetans their ability to withstand high altitude.

  10. Genetics

    When flowers died out in Arctic, so did mammoths

    Genetic analysis finds vegetation change in the Arctic around same time as megafauna extinction.

  11. Genetics

    Chemical changes to genes make twins’ pain differ

    Chemical changes to genes may make identical twins experience pain differently.

  12. 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.