The 140 kbp genome containing many short repeats, ribosomal RNA genes, one RNA polymerase gene (rpo) and one RubisCO gene (rbcL) is most likely from a(n)
A) plant.
B) autotrophic bacterium.
C) chloroplast.
D) autotrophic archaeon.

Question

Quizplus · Accepted Answer

The presence of ribosomal RNA genes, RNA polymerase gene, and RubisCO gene suggest that this genome is likely from a photosynthetic organism. The genome size of 140 kbp is characteristic of a chloroplast genome. Chloroplasts are organelles found in photosynthetic eukaryotes such as plants, and they have their own genome that is circular and usually around 120-160 kbp in size. The short repeats are also characteristic of chloroplast genomes. Therefore, choice C - chloroplast is the best option.

The 140 Kbp Genome Containing Many Short Repeats, Ribosomal RNA