How many chromosomes do Horses (Equus caballus) possess?
Answer
64 chromosomes
Horses, scientifically classified as Equus caballus, maintain a stable and consistent chromosomal count of 64 chromosomes within their genetic makeup. This number serves as one half of the equation when determining the total chromosome count of a hybrid like the zorse. The significant difference between this stable number and the variable counts found in different zebra species (ranging from 32 up to 46) is the foundational genetic barrier that leads to the resulting offspring's sterility, as the paired chromosomes cannot align correctly during meiosis.
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