These include earthworms, most snails, most marine invertebrates and around 21 species of fish.Sarah Elliot, Cats Protection’s central veterinary officer, said: “Hermaphrodite – or intersex – cats do not frequently occur so Bellini is one of the more unusual cats to be found.” “This may arise through mosaicism – when a kitten’s cells divide unusually while the kitten is a growing embryo.Furthermore, our data showed that comprises a rare example of an organism where female-biased genes evolve rapidly; they exhibited faster evolution at the protein level and reduced optimal codon usage compared with male-biased genes, sexually unbiased genes, and vegetative genes.Female-biased genes also had a greater portion of sites that experienced positive selection and showed stronger signals of selective sweeps than male-biased genes, suggesting that the rapid evolution is at least partly driven by adaptive evolution.Nine-week-old Bellini was initially thought to be male when it was first taken in by a Cats Protection adoption centre in St Helens, Merseyside in February.
The results held across various genotypes and stages of sexual development.
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