Which of the RRNA Molecules Has Proven the Most Useful

Question

Which of the rRNA molecules has proven the most useful in taxonomy/identification?
A) 5S
B) 16S
C) 23S
D) 80S
E) 70S

Accepted Answer

The 16S rRNA molecule has proven to be the most useful in taxonomy and identification because it has conserved regions that allow for universal primers to be used for PCR amplification, while also having variable regions that can distinguish between different species. Additionally, the 16S rRNA gene is present in all bacteria and archaea, making it a useful tool for comparing and classifying these organisms.