MULTIPLICATION. “The development of a sexual cycle would be expected to place such a control system in jeopardy. The fusion of gametes would generate diploid zygotes with twice the organelle-genome tally, and without some way to return to the “organelle-haploid” value, meiotic products would be “organelle-diploid” and then, in the next round, “organelle-tetraploid” and so on.”
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