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  2. Mar 21, 2024 · Because blue eyes are caused by the absence of pigment, cats with heterochromia always have one blue eye. The key point is this: if pigment is present in the eye, colors like green, brown and yellow are seen. If there is no pigment in the eye, the color of the eye is blue. So blue means “no pigment is present”.

  3. Sep 22, 2023 · To summarize, the causes of heterochromia in cats can be attributed to genetic factors, injuries or trauma, and eye diseases or conditions. While some cats may inherit this unique eye coloration, others may develop it as a result of an injury or the presence of an underlying eye condition.

  4. Jan 15, 2024 · Both inherited genes and genetic mutations can cause heterochromia. Additionally, it may also develop after certain diseases or injuries. While heterochromia is possible in any animal with melanin pigments in the iris, it is most often documented in humans and certain breeds of domesticated animals.

  5. Heterochromia in cats occurs due to variations in pigmentation within the iris, which is the colored portion of the eye. The iris contains a layer of cells called melanocytes, which produce the pigment melanin. The amount and distribution of melanin determine the eye color.

  6. Congenital heterochromia may be due to mosaicism in which two distinct populations of cells arise from one fertilised egg, or chimerism in which two zygotes merge early on in the development stage. This possibly explains heterochromia in solid coloured cats who don’t carry the white spotting gene.

    • What causes heterochromia in cats?1
    • What causes heterochromia in cats?2
    • What causes heterochromia in cats?3
    • What causes heterochromia in cats?4
    • What causes heterochromia in cats?5
  7. May 3, 2022 · The gene that causes their fur to be white is the same gene that gives them their unique eye colour. There are two types of heterochromia: Complete heterochromia: A cat has eyes that are two different colours; Partial or sectoral heterochromia: The iris of one eye has more than one colour; Why is Heterochromia common in cats?

  8. Jul 12, 2019 · Heterochromia can be genetic or acquired through disease or injury. Some experts say Venus may be a “feline chimera,” meaning her cells contain two types of DNA, caused when two embryos fuse together. Her one blue eye—while rare in cats—is typical of cases of complete heterochromia.

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