Multiple choice

If genomic sequence of the organism is done, which of the following theory will be supportive of the organism?

Directions: Rickettsia prowazekii is an obligate intracellular parasite.

  1. Parasitic bacteria have large genomes.

  2. Parasitic bacteria and viruses share similar genomic sequence.

  3. Mitochondria have evolved from endosymbiotic bacteria.

  4. Bacteria evolved from viruses.

  5. Parasitic bacterial genome has more of exons than introns.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Mitochondria have evolved from endosymbiotic bacteria. According to researchers, the modern mitochondria that generate energy in eukaryotic cells have actually evolved from endosymbiotic bacteria. Since these bacteria lived within cells, they have become a part of the cells producing ATP. Rickettsia prowazekii genome is very close to mitochondria.

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