> When the differences in number and arrangement of chromosomes is too great, hybridization becomes less and less likely. The wolf, dingo, dog, coyote, and golden jackal diverged relatively recently, around three to four million years ago, and all have 78 chromosomes arranged in 39 pairs.[6] This allows them to hybridize freely (barring size or behavioral constraints) and produce fertile offspring. The side-striped jackal and black-backed jackal both have 74 chromosomes.[7]
Other members of the Canidae family, which diverged seven to ten million years ago, are less closely related to and ca…