What characteristic of mitochondrial DNA is considered particularly strong evidence in favor of the endosymbiosis theory?
a. Mitochondrial DNA has many similarities to chloroplast DNA.
b. Mitochondria have their own genomes, which are organized as circular molecules much like a bacterial chromosome. Mitochondrial genes code for a few of the proteins needed to conduct electron transport and RNAs needed to translate the mitochondrial genome.
c. Mitochondrial DNA contains operons like prokaryotic cells do.
d. The number of genes in mitochondrial DNA is similar to the typical number of genes in prokaryotes.
