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Which form of protozoa reproduction generates more variation?

Which form of protozoa reproduction generates more variation?

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Sexual reproduction always generates more genetic variation than asexual reproduction, because the fusion of genetic material from different varieties occurs in sexual reproduction process and the offspring is not genetically identical to the parent cell. The hypothesis that protozoa are the origin of multicellular animals is supported by the fact that these protozoa were able to reproduce sexually, because only genetic variation produces biological differentiation for the formation of new types of living organisms.

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