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When the sexually reproducing grasshopper species Warramaba whitei (left) and Warramaba flavolineata (right) mated around 250,000 years ago, they made Warramaba virgo (center), which has been cloning itself ever since.
How a Grasshopper Gave Up Sex, Took Up Cloning
Meet the grasshopper that has reproduced asexually for a quarter of a million years—without acquiring undue numbers of harmful mutations.
How a Grasshopper Gave Up Sex, Took Up Cloning
How a Grasshopper Gave Up Sex, Took Up Cloning

Meet the grasshopper that has reproduced asexually for a quarter of a million years—without acquiring undue numbers of harmful mutations.

Meet the grasshopper that has reproduced asexually for a quarter of a million years—without acquiring undue numbers of harmful mutations.

hybrid
illustration of a mitochondrian inside a cell
Could Dad’s Mitochondrial DNA Benefit Hybrids?
Alejandra Manjarrez, PhD | Jan 20, 2022 | 7 min read
Studies have found that organisms can inherit mitochondria from male parents in rare instances, and both theoretical and experimental work hint that this biparental inheritance is more than just a fluke.
stone panel depicting a horselike animal led by ropes around the neck
Ancient Mesopotamians Bred Horselike Hybrids
Chris Baraniuk | Jan 14, 2022 | 4 min read
A genomics study reveals the parentage of a long-mysterious creature called a kunga, the earliest-known hybrid animal bred by humans.
photograph of john pawalek in a navy blue suit and red tie
John Pawelek, Who Explored the Causes of Metastasis, Dies at 79
Marcus A. Banks | Jun 22, 2021 | 2 min read
The Yale School of Medicine cancer researcher doggedly pursued the question of how cancer spreads.
illustrations of cancer cells dividing in pink tones
Cancer Metastasizes Via Fusion of Tumor and Immune Cells: Study
Marcus A. Banks | Jun 17, 2021 | 3 min read
Researchers say evidence of hybridization between leukocytes and cancer indicates that this is a primary means of metastasis. Others disagree.
Infographic: Animals of Different Species Hybridize
Ashley Yeager | May 1, 2021 | 2 min read
The offspring of crosses between related species can sometimes fill a new environmental niche, and such hybridizations may even lead to speciation.
The Narluga: New Insights from Old Bones
Ashley Yeager | Oct 1, 2019 | 4 min read
DNA analysis of a bizarre, 30-year-old whale skull serves as a reminder of the secrets that museum specimens keep about the natural world.
mouse microbiome
Mouse Genetics Shape the Gut Microbiome More than Their Environment
Nicoletta Lanese | Aug 6, 2019 | 3 min read
Neither the maternal microbiome nor housing conditions appear to permanently alter which microbes remain in the animals.
human embryo
First Human–Monkey Chimeras Developed in China
Nicoletta Lanese | Aug 5, 2019 | 3 min read
The researchers aim to grow transplantable human organs from primate embryos.
beluga narwhal hybrid cetacean narluga naluga skull DNA genetic analysis
Image of the Day: Hybrid Cetacean
Chia-Yi Hou | Jun 21, 2019 | 1 min read
The DNA of a whale shows its father was a beluga and its mother was a narwhal.
Macrophage engulfing cancer cell
Cancer Cells Fuse with Immune Cells in Human Patients
Anna Azvolinsky | Sep 13, 2018 | 4 min read
The hybrid cells promote tumor heterogeneity and possible metastasis, a new study in mice and humans shows.
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