The RRNA Gene Sequences of Hyperthermophilic Archaea and Bacteria Have

question 68

Multiple Choice

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

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