The biogenesis of mitochondria 26
- Cite this article as:
- Lukins, H.B., Tate, J.R., Saunders, G.W. et al. Molec. gen. Genet. (1973) 120: 17. doi:10.1007/BF00332981
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The vegetative segregation of parental and recombinant mitochondrial (cytoplasmic) genomes of Saccharomyces cerevisiae were compared by experiments involving the micromanipulation of early zygotic buds. Recombinant mitochondrial genomes are formed rapidly upon zygote formation and initial zygote buds are frequently composed of varying proportions of recombinant and parental type gnomes, which then all segregate in a similar fashion. Evidence suggesting that some formation of recombinant genomes can continue in the early zygote progeny is presented, but the possibility that recombination is restricted to the zygote has not been excluded. Polarity phenomena appear to be determined by the mechanism of the mitochondrial recombination events rather than by the mechanism of distribution of recombinant genomes to zygote progeny.