Asexual reproduction is the oldest and easiest method of reproduction and is widespread in unicellular organisms (bacteria, blue-green bacteria, chlorella, amoeba, ciliates). This method has its advantages: there is no need to find a partner in it, and useful hereditary changes are saved almost forever. However, with this method of reproduction, the variability necessary for natural selection is achieved only due to random mutations and therefore is very slow. However, it should be noted that the ability of a species to only reproduce asexually does not exclude the ability to have a sexual process, but when these events are separated in time.
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