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    Orange Cats and the Genetic Switch: The Arhgap36 Discovery

    23 min
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    25 мая 2026 г.
    ScienceNatureEducation

    Explore the breakthrough discovery of the Arhgap36 gene and how a unique deletion mutation on the X chromosome determines the iconic color of orange tabby cats.

    Orange Cats and the Genetic Switch: The Arhgap36 Discovery

    Лучшая цитата из Orange Cats and the Genetic Switch: The Arhgap36 Discovery

    “

    The orange trait is actually caused by a 'deletion mutation' in an unexpected place—a 5-kilobase chunk of DNA that acts like a regulatory switch, forcing the hair to be orange by systematically shutting down the ability to be black.

    ”

    Этот аудиоурок был создан участником сообщества BeFreed

    Вопрос для ввода

    Let's talk about orange cats and black cats. Are they generally gender specific and are black cats really red?

    Голоса ведущих
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    Milesplay
    Стиль обучения
    Глубокий
    Источники знаний
    Article Molecular and genetic characterization of sex-linked orange coat color in the domestic cat
    link
    https://www.sciencedirect.com/science/article/pii/S0960982225005524
    OMIA:001201-9685: Coat colour, orange in Felis catus (domestic cat) -
    
    
    OMIA - Online Mendelian Inheritance in Animals
    link
    https://www.omia.org/OMIA001201/9685/
    This Strange Mutation Explains the Mystifying Color of Orange Cats | Scientific American
    link
    https://www.scientificamerican.com/article/this-strange-mutation-explains-the-mystifying-color-of-orange-cats/
    Cat coat genetics
    link
    https://en.wikipedia.org/wiki/Cat_coat_genetics
    Orange Cats Were a Genetic Mystery. Scientists Have Finally Solved It.
    link
    https://www.popularmechanics.com/science/a64809816/orange-cat-x-chromosome/
    Cat Genetics 2.0: Colours | Laboratoire de génétique vétérinaire
    link
    http://labgenvet.ca/en/cat-genetics-2-0-colours/

    Часто задаваемые вопросы

    The orange coat color is tied to the X chromosome, a fact known to scientists since 1961. Because males have only one X chromosome, they only need one copy of the orange variant to display the color. This genetic link explains the common observation that orange tabbies are predominantly male, while female cats require two copies of the gene to be fully orange.

    Researchers recently identified that the orange trait in cats is caused by a specific genetic switch involving the Arhgap36 gene. In late 2024 and early 2025, two independent research teams discovered that a 5-kilobase deletion mutation in a non-coding region of this gene is responsible for the pumpkin hue. This discovery solved a century-old mystery regarding the exact location of the orange gene.

    Modern feline DNA sequencing revealed that the orange trait is not a traditional mutation, such as a swapped letter in the DNA code. Instead, it is a deletion mutation where a 5-kilobase chunk of DNA is missing from a specific region. This unique genetic structure made it difficult for scientists to locate the gene until recent technological advancements allowed them to pin down the Arhgap36 discovery.

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    Ключевые выводы

    1

    The Genetic Blueprint Behind the Ginger Feline

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    The X Factor and the Gender Gap

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    Flipping the Switch on Pigment Production

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    The Mystery of the Reddening Black Cat

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    A History of Ginger Genes and Ancient Flukes

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    The Complexity of the Tabby Canvas

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    Beyond the Fur: Personality and Health

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    Decoding Your Own Cat’s Colors

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    A Final Reflection on the Orange Outlier

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