The rRNA gene sequences of hyperthermophilic Archaea and Bacteria have diverged ________ over time,likely due to ________.
A) relatively little / strong constraints on sequence changes at higher temperatures
B) substantially / higher mutation rates at higher temperatures
C) relatively little / low mutation rates in these ancient organisms
D) substantially / DNA damage at higher temperatures

Question

Quizplus · Accepted Answer

The rRNA gene sequences of hyperthermophilic Archaea and Bacteria have diverged relatively little over time, likely due to strong constraints on sequence changes at higher temperatures, which maintain the stability and function of rRNA molecules in extreme conditions.

The RRNA Gene Sequences of Hyperthermophilic Archaea and Bacteria Have