Yes, 100% signifies the animal definitely carries the mutation. In your case the animal has 3 dominant traits (Spider, Pinstripe, Pastel) and 2 recessive ones (Clown, Ghost). Dominant traits are visually identifiable in het form while recessive ones are not. We use percentages to signify the statistical probability an animal will carry a recessive mutation, based on the parents. 50%, 66%, and 100% are possible scenarios.
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