ARTZ :: Mutation.

1.Particularly in the plant kingdom, new species may arise from inter-specific hybrids which, although usually sterile, sometimes become fertile as a result of polyploidy.

2.Natural selection tends to eliminate mutant genes with harmful effects. The agents of selection include predators; parasites and infectious diseases; competition for space, food, etc.; climate and micro-climate condititions; and sexual selection. *Sheldrake*

Keywords: numeric

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Hybrid.

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To create a hybrid.