Sudden, large, heritable changes such as the short-legged Ancon sheep, which have no intermediate forms, are examples of which kind of variation?

1. Some germinal variations appear suddenly due to mutations and have no in-between forms. 2. These are discontinuous variations, like the short-legged Ancon sheep. 3. Continuous variation is small and gradual with intermediate forms, the opposite case, which rules out option A. 4. So sudden large changes are discontinuous variation, option D. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 19 Origin and Evolution of Life "Variation", p.286_