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This Wikipedia article begins: "In modern molecular biology and genetics, a genome is the genetic material of an organism. It consists of DNA (or RNA in RNA viruses). The genome includes both the genes, (the coding regions), the noncoding DNA and the genomes of the mitochondria and chloroplasts."

The above definition is not internally consistent. If "a genome is the genetic material of an organism", then the genetic material of an organelle can only be called a genome if the organelle is an organism. Mitochondria and chloroplasts are organelles, but they are not organisms. Therefore, the genetic material within these organelles cannot be referred to as "genomes", unless the definition of an organism is expanded to include organelles, which is false.

The corrected first sentence of this article should read:

"In modern molecular biology and genetics, a genome is the genetic material of an organism. It consists of DNA (or RNA in RNA viruses). The genome includes both the genes, (the coding regions), and the noncoding DNA, contained within the organism's nuclei, and within some organelles, such as mitochondria or chloroplasts."