Why is a dilute color like Blue inherently less common than its non-dilute counterpart like Black?

Answer

The dilution gene must be present in both parents for the kitten to express it

Because the dilution factor requires a specific genetic pairing where the recessive gene must be present in both parents for a kitten to express it, the resulting dilute color is inherently less frequent than its non-dilute version.

Why is a dilute color like Blue inherently less common than its non-dilute counterpart like Black?
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