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. 1987 Apr;84(8):2391–2395. doi: 10.1073/pnas.84.8.2391

Transmission of mitochondrial and chloroplast genomes in crosses of Chlamydomonas.

J E Boynton, E H Harris, B D Burkhart, P M Lamerson, N W Gillham
PMCID: PMC304657  PMID: 3031682

Abstract

Physical differences between organelle genomes of the interfertile species Chlamydomonas reinhardtii and Chlamydomonas smithii have been used to demonstrate that sexual zygotes transmit chloroplast and mitochondrial DNA from opposite mating types. Processes responsible can be separated functionally and genetically, although both are controlled by mating type. In vegetative diploids, chloroplast and mitochondrial genomes are transmitted biparentally, but a 1-kilobase insert present in the C. smithii mitochondrial genome spreads unidirectionally to all C. reinhardtii genomes in a manner reminiscent of the intron found in the mitochondrial 21S rRNA gene of omega + strains of yeast.

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