Mitochondria and chloroplasts evolved from bacteria and have their own genomes. Most ancestral mitochondrial and chloroplast genes have been transferred to the nucleus. Which of the following statements are true? a) Nuclear genes are readily transferred into the mitochondrial genome. b) Some reduced mitochondria-related organelles completely lack a genome. c) Genes are retained in endosymbiont genomes because their protein products are too hydrophobic to pass through the TOM and TIM complexes. d) Mitochondrial and chloroplast genes are still being transferred to the nuclear genome in some lineages.
Added by James P.
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Nuclear genes are readily transferred into the mitochondrial genome. This statement is false. While there has been gene transfer from mitochondria to the nucleus, it is not a common occurrence for nuclear genes to be transferred into the mitochondrial genome. Show more…
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