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Does the occurrence of diversity of ani...

Does the occurrence of diversity of animals on earth suggest their diverse ancenstry also? Discuss this point in the light of evolution.

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Newer organisms arise from the existing ones due to natural selection of the acquired variations. Common ancestry between organisms of different species arises during speciation, in which new species are established from a single ancestral population.
Yet, the fundamentally different body organisations of diversified animal groups suggest diverse ancestry. Thus, a common ancestry for all the animals is not acceptable..
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