Question

the casualty behind the sudden changes was understood due to dash​

Answer 1

Answer: mutation principle of Hugo de Vries

Explanation:

The causality behind the sudden changes was understood due to mutation principle of Hugo de Vries. He gave the theory of mutation. According to him, species evolved from one species to another through sudden changes of the traits called as mutation.

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Answer 2

Answer:

The casualty behind the sudden changes was understood due to mutation