The pointed pattern is really a form of partial albinism, resulting from a mutation in tyrosinase, an enzyme involved with melanin production. The mutated tyrosinase enzyme is heat-sensitive; it fails to work at standard physique temperatures but gets Energetic in cooler (< 33 °C) parts of the pores and skin.[16] https://beckettxxuzv.blogzet.com/the-smart-trick-of-ragdoll-that-no-one-is-discussing-53873563