Tricolour cats

              Tricolour cats are in most cases female. That’s because gene for black and gene for orange colour are carried by chromosome X. Females’ combination of sex chromosomes is XX, while males’ combination is XY. Female cats have two chromosomes X, which means they have two chromosomes with colour code. Male cats have one chromosome X, so they have one chromosome that can carry colour. Chromosome Y has no colour genes. Tricolour cats appear when gene responsible for black colour and gene responsible for ginger colour are carried by chromosomes. However male cats can also be tricolour. It can happen when Klinefelter’s Syndrome occur. In that situation they have XXY combination. This Syndrome is really rare and, in most cases, can cause worse health than in normal cat. To sum up, tricolour cats can be males, but in most cases, they are females.


link: https://www.thesprucepets.com/are-calico-cats-always-female-3384568

Komentarze

  1. englishdiary5 kwietnia 2022 12:01

    I'm afraid I got a bit confused. So male cats can be tricolor after all? And I thought I understood basic genetics like this.

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